JP2006038683A - CMM - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a three-dimensional measuring machine capable of measuring a three-dimensional position without using a reflecting prism and further eliminating the need for an operator to collimate a measuring point one by one.
A three-dimensional measuring machine (110) includes a collimating camera optical system (47) and a wide-angle camera optical system (89) for imaging a measurement object captured by a telescope (46), and both camera optical systems. A touch panel display (64) for displaying the imaged measurement object, a touch pen (68) for designating a plurality of measurement points on the touch panel display, and a storage means (59) for storing the coordinates of each measurement point on the touch panel display ) And an automatic collimation device (69) for collimating all the measurement points whose coordinates are stored in the storage means in sequence.
[Selection] Figure 1

Description

  The present invention relates to a three-dimensional measuring machine having an imaging device such as a CCD camera and an illumination device, and in particular, a three-dimensional device capable of automatically measuring a large number of measurement point positions on a large structure such as a bridge, a ship, and a tunnel. Related to measuring instrument.

  Conventional CMMs collimate the reflecting prism installed at the measuring point with a telescope, measure the angle in the direction of the measuring point from the angle of the telescope at this time, and further apply the distance measuring light to the reflecting prism. The angle and the distance to the measurement point were obtained by reflecting and receiving the reflected light.

  On the other hand, since it is difficult to install a reflecting prism on dangerous terrain such as a cliff or a volcano, a surveying device using a reflecting prism is proposed in Patent Document 1 below in order to survey such dangerous terrain.

  As shown in FIG. 8A, a surveying instrument described in Patent Document 1 below includes a non-prism type total station (electronic rangefinder) 1 that does not use a reflecting prism or a reflecting target, and the total station. 1 is provided with a computer 22 for remotely operating 1. The total station 1 is installed on a support leg 12 erected on a mount 11 fixed to a dangerous terrain S, and is protected by a roof 14 and a hood 13. Further, as shown in FIG. 8B, the total station is provided with a turning means 3 for rotating the telescope 2 horizontally and vertically, and fixing the CCD camera 4 apart from and parallel to the telescope 2. Yes. On the other hand, in addition to the computer screen 5 and the keyboard 21 connected to the computer 22, the total station 1, the turning means 3, and the CCD camera 4 are also connected via the data transmission means 8.

  According to such a non-prism type surveying apparatus, the terrain photographed by the CCD camera 4 is displayed on the computer screen 5, so that the worker O looks at the computer screen 5 in a safe place and uses the keyboard 21 or the like to measure the total station. 1 can be operated to survey dangerous terrain.

  In order to measure a large number of measurement point positions on a large structure with the CMM, a reflective target must be installed at a large number of measurement points, and it is necessary to collate a large number of measurement points one by one. There was a problem that the burden on workers was heavy.

  Further, in the surveying instrument described in Patent Document 1, although it is not necessary to install a reflection target at the measurement point, the CCD image projected on the computer screen 5 because the collimation axes of the CCD camera 4 and the telescope 2 are not coaxial. When the measurement point is collimated using the image obtained by the camera 4, the collimation position is not accurately collimated, and there is a problem that an error occurs in the measurement value of the collimation position. Further, when there are many measurement points, there is a problem that it is burdensome for an operator to collimate the total station 1 with the keyboard 21 or the like while watching the computer screen 5 one by one.

  Of course, in order to reduce the burden of collimation work for workers, there has been a surveying instrument equipped with an automatic collimation device. However, automatic collimation was difficult with a non-prism type surveying instrument. In order to operate the automatic collimation device, a target such as a reflective sheet must be installed at the measurement point in order to reliably identify the measurement point.

  The present invention has been made in view of the above problems, and a three-dimensional measuring machine that can measure a three-dimensional position without using a reflecting prism and eliminates the need for an operator to collimate the measurement points one by one. The issue is to provide.

  In order to achieve the above-described problems, a three-dimensional measuring machine according to a first aspect of the present invention includes an imaging device that images a measurement object captured by a telescope, and a display that displays the measurement object captured by the imaging device. An apparatus, measurement point designating means for designating a plurality of measurement points on the display device, storage means for storing the coordinates of each measurement point on the display device, and all of the coordinates stored in the storage means And an automatic collimation device that collimates the measurement points sequentially, and sequentially measures the positions of all the designated measurement points.

  According to a second aspect of the present invention, in the coordinate measuring machine according to the first aspect of the invention, the coordinates of the measurement point are represented by a horizontal deviation and a vertical deviation from the center of the reticle line in the display device. When the positions of the points are measured, the coordinates stored in the storage means are corrected for the measurement points that have not been measured.

  According to a third aspect of the present invention, in the three-dimensional measuring machine according to the first or second aspect of the present invention, the three-dimensional measuring machine is connected to a remote control measurement controller.

  As is apparent from the above description, according to the first aspect of the invention, only a plurality of measurement points are designated by the measurement point designation unit on the measurement object that is imaged by the imaging device and displayed on the display device. Thus, the three-dimensional position of each measurement point can be measured by sequentially collimating all the designated measurement points. For this reason, a reflecting sheet (target) that is cheaper and easier to handle than the reflecting prism is simply attached to the measuring points, and the operator does not have to collate the measuring points one by one, even if the number of measuring points is large. Reduces the burden on workers.

  According to the invention of claim 2, the coordinates of the measurement point are represented by the horizontal deviation and the vertical deviation from the center of the reticle line in the display device, and when the position of one measurement point is measured, the measurement of the position is still performed. For the measurement points that have not been completed, the coordinates stored in the storage means are corrected. Therefore, all the measurement points can be easily obtained by using the horizontal deviation and the vertical deviation stored in the storage means. The three-dimensional position can be measured by collimating to

  According to the invention of claim 3, even if the measurement object is in a dangerous place or a place where people cannot approach, a CMM is installed near the measurement object, and the worker can measure from a safe place. The measurement object can be measured by the controller.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a block diagram of a three-dimensional measuring machine (hereinafter simply referred to as a measuring machine) according to an embodiment of the present invention. FIG. 2 is a diagram illustrating an optical system and an automatic collimation device of the measuring machine. FIG. 3 is a front view of the measuring machine. FIG. 4 is a diagram showing a display example of the measurement object on the touch panel display of the measuring machine. 5 to 7 are diagrams illustrating a method of measuring a large number of measurement point positions on a measurement object such as a large structure without using a reflection prism or the like.

  As shown in FIG. 3, the measuring device 110 of the present embodiment is provided with a horizontal rotating portion 42 that can be horizontally rotated around a vertical shaft 43 that is erected on the leveling table 40, and stands on the horizontal rotating portion 42. A telescope 46 is provided between a pair of provided pillars 44 so as to be vertically rotatable. As shown in FIG. 1 and FIG. 2, the telescope 46 is an imaging device that images a measurement object with a wide field of view with a low magnification in addition to the collimating camera optical system 47 as an imaging device that images the measurement object with a high magnification. A wide-angle camera optical system 89 is provided as a device.

  The measuring device 110 includes a distance measuring unit (lightwave distance meter) 48 that measures the distance to the measurement point, a horizontal angle measuring unit (horizontal encoder) 50 that measures a horizontal angle with respect to the collimation direction of the telescope 46, A vertical angle measuring unit (vertical encoder) 52 that measures a vertical angle with respect to the collimation direction of the telescope 46, a horizontal control unit (horizontal servo motor) 54 that controls the horizontal angle of the telescope 46, and a vertical angle of the telescope 46 are controlled. A vertical control unit (vertical servomotor) 56, a CPU (arithmetic control unit) 58 for controlling each of these units and calculating a measurement result, and a memory for storing a measurement result, a program for operating the measuring instrument 110, and the like Means 59, an image processing device 60 that performs image processing such as binarization processing for each pixel (pixel) on the image obtained by the camera optical systems 47 and 89, and the image obtained by the camera optical systems 47 and 89 And a touch panel display (display unit) 64 for displaying measurement results, a touch pen 68 as a measurement point designating means for inputting various commands and data, and instructing measurement points, and various images displayed on the touch panel display 64 The image and the measurement results obtained by the superimpose device 62 for superimposing the images and information of the camera and the camera optical systems 47 and 89 are transmitted to the outside, and the command and the data necessary for the measurement are received from the outside. Input / output device 66. A remote controller such as a personal computer 65 is connected to the input / output device 66. Of course, in addition to the personal computer 65, other appropriate external devices such as an electronic field book can be connected to the input / output device 66.

  The wide-angle camera optical system 89 includes a wide-angle lens 87 and a wide-angle CCD camera 88, and further includes a zoom device (not shown). Of course, in order to reduce the size and price, the zoom device can be omitted, and the wide-angle camera optical system 89 itself can also be omitted. Further, instead of the wide-angle CCD camera 88, another appropriate image pickup device may be used.

  The collimating camera optical system 47 may have an objective lens 11 on the collimation axis O, and may have a point-symmetrical shape for short-distance measurement, but normally has an asymmetrical reflecting prism 70, dichroic prism 72, collimating. A CCD camera 45 is installed. Further, a light emitting element 74 such as an infrared LED that emits distance measuring light O2 of infrared laser light, a condensing lens 76 that condenses the distance measuring light O2, and the focused distance measuring light O2 to the reflecting prism 70. A half mirror 78 that reflects the light, a light source 80 such as a light bulb that emits illumination light O3 that also serves as collimation light with visible light, a condenser lens 82 that collects the illumination light O3, a mask 81, and a light collector A mirror 84 that reflects the illuminated illumination light O3 toward the reflecting prism 70, a distance measuring light O2 reflected by the measurement point reflected by the dichroic mirror 72, and a light receiving element 86 such as a photodiode, and a measurement point. The collimated CCD camera 45 is provided with the reflected illumination light O3 transmitted through the dichroic mirror 72 and incident through the focusing lens 19. Of course, other suitable imaging elements may be used instead of the collimating CCD camera 45.

  In the present embodiment, not the laser light but the visible light illumination light O3 that is easily diffused by the light source 80 such as a light bulb is used as the collimation light, and the illumination light O3 is coaxial with the collimation axis O of the collimation camera optical system 47. It is made to emit to. For this reason, the illumination light O3 spreads over the entire field of view of the wide-angle CCD camera 88 and is reliably reflected toward the measuring device 110, so that a clear image of the entire measurement object can be obtained even in an indoor dark place or at night. Can do.

  Now, the distance measuring light O2 (infrared laser light) emitted from the light emitting element 74 passes through the condenser lens 76, the half mirror 78, the reflecting prism 70, and the objective lens 11 toward the measurement point on the measurement object. Light is transmitted. Then, the distance measuring light O2 reflected at the measurement point travels backward on the optical path that has just arrived, passes through the objective lens 11, is reflected by the dichroic prism 72 in a right angle direction, and enters the light receiving element 86. The distance to the target is the phase difference between the reference light incident on the light receiving element 86 by the optical fiber (not shown) from the light emitting element 74 and the distance measuring light O2 incident on the light receiving element 86 after being reflected at the measurement point, as in the conventional case. Is calculated from In practice, the distance is measured by subtracting the phase difference between the reference signal and each signal.

  On the other hand, the illumination light O3 emitted from the light source 80 is emitted toward the measurement object through the condenser lens 82, the mirror 84, the reflection prism 70, and the objective lens 11. Then, the illuminated measurement object is imaged on the CCD cameras 45 and 88 by the objective lenses 11 and 87 and displayed on the touch panel display 64.

  FIG. 4 shows the touch panel display 64 when the manual survey mode is set by a switch (not shown) on the touch panel display 64. The CPU 58 performs image processing on the images obtained by the camera optical systems 47 and 89 and displays them on the touch panel display 64. In addition to the measurement object 100, the touch panel display 64 has a reticle beam (crosshair) 92 indicating the direction of the collimation axis (optical axis) O (O1) of each of the camera optical systems 47 and 89. Then, the measurement result 96 by the distance measuring unit 48 and the two angle measuring units 50 and 52 is displayed.

  The measuring device 110 includes a camera switching key, a zoom key, and a direction key (not shown). The camera switching key is used to switch between the wide-angle camera optical system 89 and the collimating camera optical system 47 alternately. The zoom key is for enlarging or reducing the image displayed on the touch panel display 64. The direction key is for rotating the telescope 46 in the vertical and horizontal directions. In FIG. 4, the measurement object 100 is a rectangular reflection sheet. However, the measurement object 100 has a shape and a structure as long as the horizontal deviation h and the vertical deviation v from the center of the reticle line 92 are known. There is no need to stick to it.

  The centers of the light receiving portions of the CCD cameras 45 and 88 are aligned with the collimation axis O (O1) of the camera optical systems 47 and 89 on the touch panel display 64, and the center of the reticle line 92 is also the touch panel display 64. It is displayed in line with the center. For this reason, in order to collimate the measurement point 90 on the measurement object 100, the telescope 46 is rotated by a direction key (not shown) so that the measurement point 90 on the measurement object 100 is positioned at the center O (O1) of the reticle line 92. Should match.

  In normal manual measurement, first, the wide-angle camera optical system 89 is selected by the camera switching key, the telescope 46 is rotated by using the direction key, and the measuring object 100 is moved to the vicinity of the center O1 of the reticle line 92 of the touch panel display 64. Let Next, the collimating camera optical system 47 is switched with the camera switching key, and the magnification is increased as much as possible with the zoom key. Then, the measurement point 90 is collimated by operating the direction key and rotating the telescope 46 so that the measurement point 90 on the measurement object 100 coincides with the center O of the reticle line 92. At this time, the measurement point 90 coincides with the center of the reticle line 92. When the measurement point 90 is collimated, the CPU 58 turns off the light source 80 and measures the horizontal angle, altitude angle, and distance to the horizontal angle measuring unit 50, the vertical angle measuring unit 52, and the distance measuring unit 48, respectively. The measurement result 96 is displayed on the touch panel display 64. The reason for turning off the light source 80 before the distance measurement is to prevent the illumination light O3 from giving an error in the distance measurement and to save power.

  By the way, in FIG. 4, for automatic collimation, the horizontal deviation h and the vertical deviation v between the center O (O1) of the reticle line 92 and the measurement point 90 are determined by the direction of the measurement point 90 and the collimation axis O ( Utilizing the fact that it corresponds to the horizontal angle and the vertical angle formed by O1). That is, when a target such as a reflective sheet that reflects the illumination light O3 only to the measuring instrument 110 side and is shaped is installed at the measurement point 90, the CPU 58 can easily identify the target, and the horizontal deviation h and A vertical deviation v (both deviations h and v are represented by the number of pixels) is calculated, and a horizontal control signal and a vertical control signal corresponding to the horizontal deviation h and the vertical deviation v are sent to the horizontal control unit 54 and the vertical control unit 56. Since the collimation axis O (O1) of the telescope 46 matches the target direction, automatic collimation can be performed easily.

  An automatic collimation device 69 for this purpose is composed of the camera optical systems 47 and 89, the CPU 58, the horizontal control unit 54, and the vertical control unit 56. In automatic collimation, first, preliminary collimation is performed using a wide-angle camera optical system 89 with a wide field of view so that the position of the measurement point 90 can be detected quickly, and then the collimation camera optical system 47 is switched to provisional vision. The collimation is performed and the collimation camera optical system 47 is set to the maximum magnification so that the collimation error is finally minimized. Performing measurement after turning off the light source 80 after automatic collimation is the same as manual measurement.

  By the way, the measuring instrument 110 can be remotely operated by connecting it to the personal computer 65 which is a measurement controller with the power cable 116, the video cable 117, the communication cable 118, or an appropriate communication means. Therefore, the personal computer 65 includes a display, a memory (storage means), and a CPU (not shown), and the measuring instrument 110 has a built-in measurement program for remote measurement, and the touch panel display of the measuring instrument 110 is also included in the display. The same image as 64 is displayed. Then, the operator can remotely control the measuring instrument 110 while looking at the display of the personal computer 65.

  On the other hand, the measuring machine of the present embodiment can be set to the automatic measurement mode by a switch (not shown). Even in the automatic measurement mode, first, the wide-angle camera optical system 89 is automatically selected. The measurement object 100 needs to be imaged in advance in the image of the wide-angle CCD camera 88. When the measurement object 100 is not imaged, adjustment is performed using the direction keys so that the measurement object 100 enters the image of the wide-angle CCD camera 88. In this way, the measuring object 100 is displayed on the touch panel display 64 as shown in FIG. Therefore, the measurement point 90 on the measurement object 100 is touched with the touch pen 68 and the measurement point 90 is indicated on the touch panel display 64. Thereafter, the horizontal deviation h and the vertical deviation v between the center O (O1) of the reticle line 92 and the measurement point 90 are obtained, and the automatic collimation device 69 automatically collimates the measurement point 90 to obtain the horizontal angle and altitude. Measure corners and distances. When there are a large number of measurement points 90, all the measurement points 90 are touched, the positions of all the measurement points 90 are stored, and all the measurement points 90 are sequentially measured.

  A method for automatically measuring the positions of a large number of measurement points 90an on the measurement object 100a such as a large structure by remote operation of the measuring device 110 will be described in detail with reference to FIGS.

  First, the reflection sheet 104 is affixed to the measurement point 90an of the measurement object 100a, the measurement device 110 is installed at an appropriate position, and the personal computer 65 in the measurement chamber 112 is appropriately connected by communication means so that communication is possible. . When the measuring object 100a is large, a plurality of measuring devices 110 are used to appropriately share the measuring range of each measuring device 110.

  After the preparation for measurement is completed, the automatic measurement mode as shown in the flowchart of FIG. 7 is started. Then, the light source 80 of the measuring instrument 110 is turned on to illuminate the measurement object 100a, and the measurement object 100a imaged by the wide-angle camera optical system 89 is displayed on the display of the personal computer 65 (step S1). Therefore, an image by the collimating CCD camera 45 is switched by a camera switching key (not shown), and the measurement object 100a is appropriately placed on the display 64a of the personal computer 65 by a zoom key (not shown) as shown in FIG. A large size is displayed (step S2). Of course, when a certain amount of collimation error is allowed, the position of the measurement point 90an can be measured by the method described below even if an image by the wide-angle camera optical system 89 is used.

  When the measurement object 100a imaged by the collimating camera optical system 47 is displayed on the display 64a of the personal computer 65, the touch pen 68 touches all the measurement points 90a1, 90a2, −90an, 90an + 1− − to be measured. The measurement point is designated (step S3). The personal computer 65 uses the coordinates of the measurement points 90a1, 90a2, −90an, 90an + 1−− on the display 64a, that is, the horizontal and vertical deviations (h1, v1), (h2, v2) from the center O of the reticle line 92. v2), −− (hn, vn), (hn + 1, vn + 1) −− are calculated and stored all (step S4) (see FIG. 6A).

  Then, when measurement is started by a start key (not shown), the personal computer 65 sets n = 1, selects the first measurement point 90a1 (step S5), and makes a horizontal deviation h1 and a vertical deviation v1 from the center O of the reticle line 92. The horizontal control signal and the vertical control signal corresponding to the above are sent to the horizontal control unit 54 and the vertical control unit 56 so that the measurement point 90a1 coincides with the center O of the reticle line 92, that is, automatic collimation is performed. Then, the position of the first measurement point 90a1, that is, the horizontal angle, the vertical angle, and the distance are measured immediately, and these measured values are stored (step S6). Of course, the light source 80 is turned off before the distance measurement.

  When the personal computer 65 completes the measurement for the first measurement point 90a1, the personal computer 65 determines whether or not the position measurement for all the measurement points has been completed (step S7). The coordinates of the second and subsequent measurement points, that is, unmeasured measurement points are corrected (step S8). This is because the telescope 46 is rotated to collimate the measurement point 90a1, and as shown in FIG. 6B, the coordinates of the second measurement point 90a2, that is, the horizontal deviation and the vertical deviation are (h2 This is because it is changed to -h1, v2-v1). Therefore, the coordinates (h2, v2) of the second measurement point 90a2 are corrected. Similarly, for the third and subsequent measurement points 90an (n = 3, 4, 5, − −), since the horizontal deviation and the vertical deviation have changed to (hn−h1, vn−v1), the coordinates (hn , Vn) is corrected (step S7).

  Next, the personal computer 65 sets n = n + 1 and selects the second measurement point 90a2 (step S9). Then, a horizontal control signal and a vertical control signal corresponding to the horizontal deviation h2 and vertical deviation v2 of the second measurement point 90a2 are sent to the horizontal control unit 54 and the vertical control unit 56 to automatically collimate the second measurement point 90a2. Then, the horizontal angle, the vertical angle, and the distance are measured, and the measurement result is stored (step S6). Subsequently, the coordinates (hn, vn) of the third and subsequent measurement points 90an (n = 3 or more) are also corrected to the coordinates after collimation of the second measurement point 90a2.

  Similarly, the nth measurement point 90an is automatically collimated, the horizontal angle, the vertical angle, and the distance are measured, the measurement result is stored, and the nth measurement point is measured for the n + 1th and subsequent measurement points. The measurement point 90an is corrected to the coordinate after collimation (step S8), and then the n + 1th measurement point 90an + 1 is selected with n = n + 1 (step S9).

  Thus, the horizontal angle, the vertical angle, and the distance are measured for all the measurement points 90a1, 90a2, −90an, 90an + 1−−. If it is determined that the measurement has been completed for all the measurement points (step S7), the stored measurement values are converted into the coordinate values of the designated coordinate system and then displayed on the display 64a of the personal computer 65. At the same time, it is recorded on an appropriate recording medium (step S10).

  When the measurement point 90an is specified in the image obtained by the wide-angle CCD camera 45, the collimation axis O1 of the wide-angle camera optical system 89 and the collimation axis O of the collimation camera optical system 47 are deviated. A collimation error occurs. Even when the measurement point 90an is specified in the image obtained by the collimation CCD camera 88, it may be difficult to accurately indicate the measurement point 90an on the image in the case of low magnification. Will occur. However, when a highly accurate measurement value is required, if a target such as a reflecting prism is attached to each measurement point 90an, the automatic collimation device 69 works to accurately and accurately collimate the measurement point 90an. There is no problem because a correct measurement value can be obtained.

  As is clear from the above description, according to the present embodiment, it is not necessary to attach a target such as a reflecting prism to a large number of measurement points 90an, and one worker on the measuring instrument 110 side or the personal computer 65 side can be used. By simply specifying with the touch pen 68 a large number of measurement points 90an on the measurement object 100a displayed on the displays 64 and 64a, the positions of the large number of measurement points 90an can be automatically measured. For this reason, especially when a highly accurate measurement value is not required, it is convenient that a large number of measurement points 90an on the large object 100a can be measured quickly and easily without placing a burden on the operator. In addition, since the worker can confirm the work status during this period on the displays 64 and 64a, it is safe.

  By the way, the present invention is not limited to the embodiment. For example, in the above-described embodiment, the coordinates of the measurement point 90an are represented by the horizontal coordinates hn and the vertical deviation vn from the center O of the reticle line 92, that is, the orthogonal coordinates with the center O of the reticle line 92 as the origin. It is possible to use coordinates appropriately, such as using orthogonal coordinates with the origin as the upper left corner of the display 64, 64a. In the case of the dedicated measuring instrument 110 that is remotely operated by the personal computer 65, the storage means 59, the image processing device 60, the superimposing device 62, the touch panel display 64, and the touch pen 68 are not provided in the measuring device 110. Only the personal computer 65 may have the function.

It is a block diagram of the whole measuring machine which is one Example of this invention. It is a figure explaining the optical system and automatic collimation apparatus of the said measuring machine. It is a front view of the measuring machine. It is a figure which shows the example of a display of the measurement object in the touchscreen display of the said measuring machine. It is a figure which shows arrangement | positioning of a measuring machine when measuring the position of many measurement points on a measuring object. It is a figure which shows the method of collimating sequentially many measurement points of the said measurement object. It is a flowchart explaining the method of measuring the position of the said many measurement points sequentially. It is a figure explaining the method of operating remotely the conventional non-prism type surveying instrument.

Explanation of symbols

46 telescope 47 collimating camera optical system (imaging device)
58 CPU
59 Storage means 64 Touch panel display (display device)
65 Personal computer (measurement controller)
68 Touch pen (Measuring point designating means)
69 Automatic collimation device 89 Wide-angle camera optical system (imaging device)
90, 90an Measuring point 92 Rectile wire 100, 100a Measuring object 110 CMM h, hn Horizontal deviation v, vn Vertical deviation

Claims (3)

  An imaging device for imaging a measurement object captured by a telescope, a display device for displaying the measurement object imaged by the imaging device, a measurement point designating unit for designating a plurality of measurement points on the display device, A storage means for storing the coordinates of each measurement point on the display device; and an automatic collimation device for sequentially collimating all the measurement points whose coordinates are stored in the storage means. A three-dimensional measuring machine characterized by sequentially measuring the positions of points.   The coordinates of the measurement points are represented by the horizontal deviation and vertical deviation from the center of the reticle line in the display device, and when measuring the position of one measurement point, the measurement points that have not yet been measured are as follows: The coordinate measuring machine according to claim 1, wherein coordinates stored in the storage means are corrected.   The coordinate measuring machine according to claim 1, wherein the coordinate measuring machine is connected to a remote control measurement controller.

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