CN201569382U - Ruler - Google Patents

Abstract

The utility model relates to a ruler, which comprises a ruler body with a first scale, the ruler body has a rectangular through hole, a pair of opposite sides of the rectangular through hole are parallel to the long side of the ruler body, and the ruler body is on the other side of the rectangular through hole. A pair of opposite sides has a second scale, and the first scale and the second scale are perpendicular to each other in the arrangement direction. The utility model uses the rectangular through hole and the first scale and the second scale perpendicular to each other to accurately determine the position of the parallel line at a predetermined distance, the rectangular through hole facilitates the determination of the position of the drawn line, and can draw the Straight lines that are parallel or perpendicular to each other facilitate the drawing of parallel lines and tables.

Description

a ruler

technical field

The utility model relates to a stationery, in particular to a ruler.

Background technique

The existing ruler is usually a rectangular plastic plate with a scale, and the scale is usually arranged in the length direction of the rectangular plastic plate. When this kind of ruler draws parallel lines, it generally draws a parallel line first, then moves the position and then draws another parallel line. Parallel lines thus drawn are usually not parallel enough, since the position of the second parallel line is determined only by the visual judgment of the line-drawer. This kind of ruler is even more inconvenient when drawing tables, because tables are usually composed of a first set of parallel lines and a second set of parallel lines perpendicular to the first set of parallel lines. The verticality of the line is not guaranteed, and it is not easy to operate when drawing. And the edges and corners of the rectangular plastic plate are easy to hurt the user.

Contents of the invention

The main purpose of this utility model is to propose a kind of ruler that is convenient to draw parallel lines and form.

In order to achieve the above-mentioned main purpose, the technical solution adopted by the utility model is: a ruler, including a scale body with a first scale, the scale body has a rectangular through hole, and a pair of opposite sides of the rectangular through hole are parallel to the sides of the scale body. On the long side, the scale body has a second scale on the opposite side of the other pair of rectangular through holes, and the first scale and the second scale are perpendicular to each other in the arrangement direction.

The utility model uses the rectangular through hole and the first scale and the second scale perpendicular to each other to accurately determine the position of the parallel line at a predetermined distance. Straight lines that are parallel or perpendicular to each other facilitate the drawing of parallel lines and tables.

Description of drawings

Fig. 1 is the structural representation of the utility model ruler.

The utility model is described in detail below in conjunction with accompanying drawing.

Detailed ways

Referring to Fig. 1, the ruler of the present utility model includes a ruler body 1 and protractors 2 and 3 at both ends of the ruler body 1, and the ruler body 1 and the protractors 2 and 3 are preferably integrally formed by transparent plastic. The utility model eliminates edges and corners that may hurt users, and the protractors 2 and 3 can be used to measure angles and radians or draw angles and arcs.

The scale body 1 is in the shape of a rectangular plate, with a first scale 11 arranged along its long side and a rectangular through hole 12 in the middle. A pair of long sides of the rectangular through hole 12 are parallel to the long sides of the ruler body 1 . The scale body 1 has a second scale 13 on one pair of short sides of the rectangular through hole 12 , and the first scale 11 and the second scale 13 are perpendicular to each other in the arrangement direction. When drawing parallel lines, the second scale 13 can be used to accurately determine the distance of multiple parallel lines; when drawing a table, the first scale line 11 and the second scale line 13 can be used to accurately determine the horizontal and vertical directions of the form The position of the parallel lines. The rectangular through hole 12 facilitates the determination of the position of the drawing line, and can draw parallel or perpendicular straight lines at one position of the ruler, which facilitates the drawing of parallel lines and tables. Preferably, the width h of the rectangular through hole 12 is half of the width H of the scale body 1, so that four standard parallel lines can be drawn at one time at one position of the ruler, which greatly facilitates the drawing of parallel lines and tables.

Claims (4)

1. a ruler, comprising a scale body with the first scale, characterized in that, the scale body has a rectangular through hole, a pair of opposite sides of the rectangular through hole are parallel to the long side of the scale body, The scale body has a second scale on one side of another pair of opposite sides of the rectangular through hole, and the first scale and the second scale are perpendicular to each other in the arrangement direction. 2. The ruler according to claim 1, further comprising a protractor at one end of the ruler body. 3. The straightedge according to claim 2, further comprising another protractor at the other end of the ruler body. 4. The ruler according to claim 1, wherein the width of the rectangular through hole is equal to half of the width of the ruler body.

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