CN2435244Y - Compasses with staff - Google Patents
Compasses with staff Download PDFInfo
- Publication number
- CN2435244Y CN2435244Y CN 00246797 CN00246797U CN2435244Y CN 2435244 Y CN2435244 Y CN 2435244Y CN 00246797 CN00246797 CN 00246797 CN 00246797 U CN00246797 U CN 00246797U CN 2435244 Y CN2435244 Y CN 2435244Y
- Authority
- CN
- China
- Prior art keywords
- rule
- vernier
- pin
- compasses
- circle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 230000002950 deficient Effects 0.000 description 1
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- Length-Measuring Instruments Using Mechanical Means (AREA)
Abstract
The utility model discloses a pair of scale compasses, wherein, an A-bracket of which is movably connected with two compass feet. The middle parts of the two compass feet are provided with a vernier and a measuring scale in parallel, the two compass feet can be slid along the left and the right of the measuring scale parallel, and the spacing of marking lines of the vernier is the same to the spacing of vertexes of the two compass feet. The utility model is used for drawing a circle, the radius of the drawn circle can be directly and accurately known, and use is very convenient.
Description
The scale compasses relate to the stationery field, and are outstanding and be applied to draw.
At present employed compasses are gone up by society, all only have picture circle function, and can not directly read the numerical value of drawn radius of circle from the compasses.If will draw the circle of a known radius, must measure two rule pin distances with rule earlier, can draw circle.And about two rule pin have inwardly or outwards tiny moving slightly, the radius of a circle that draws promptly with the radius distance value generation difference of being measured in advance.
The purpose of this utility model:, provide a kind of scale compasses that can directly read radius of circle numerical value at the defective of prior art.
The technical scheme of these compasses realizes in the following way: utilization parallelogram opposite side equates principle and vernier reading principle, on the man-like shelf of traditional compasses, set up two rule pin (being center of circle pin and picture circle pin), the rule pin connects for movable with man-like shelf, two rule pin middle parts are provided with vernier and accurate rule abreast, make the groove end points of two verniers and the summit of two rule pin form a parallelogram, just the spacing of two rule pin equals the spacing of groove on two verniers, from rule, just can directly read length between two rule pin, be drawn radius of a circle, thereby realize its purpose.
The advantage of these compasses is: drawn circle can directly read radius of a circle length on compasses, and it can lock two rule pin, has avoided resembling traditional compasses because of the inside and outside mobile error that takes place of two rule pin.
The explanation of accompanying drawing drawing: Figure of description is these compasses stereogram
Describe the utility model in detail below in conjunction with accompanying drawing:
In man-like shelf (1) lower end two rule pin (2) being set respectively in the accompanying drawing is center of circle pin and picture circle pin, and man-like shelf (1) connects for movable with rule pin (2).Two rule pin (2) middle parts are provided with two verniers (3) abreast, and rule (4) stretches in the vernier (3), and vernier (3) can be along rule (4) left and right sides parallel sliding.Still be provided with the fixedly turn-knob (5) of lockable rule (4) on the vernier (3).During use, earlier vernier (3) is transferred to the appropriate location of rule (4), promptly drawn radius of a circle numerical value just can be drawn circle then.Move for avoiding advising between pin, also the fixedly turn-knob (5) on the vernier (3) can be tightened, rule (4) is promptly locked, and rule pin (2) just can not be moved.
The improved procedure of present technique is: in above-mentioned two rule pin (2), only a rule pin is established vernier (3) therein, and rule (4) stretches in the vernier (3), and rule (4) origin or beginning is fixed on another rule pin and the position parallel with vernier (3).
Claims (3)
1, the scale compasses comprise man-like shelf (1), rule pin (2), vernier (3), rule (4), it is characterized in that: rule pin (2) are connected in man-like shelf (1) lower end versatilely, vernier (3) is located on the two rule pin (2) abreast, rule (4) stretches in the vernier (3), two rule pin (2) can be along rule (4) left and right sides parallel sliding, and the groove end points spacing of two verniers (3) equates with the summit spacing of two rule pin (2).
2, compasses according to claim 1 is characterized in that vernier (3) is provided with the fixedly turn-knob (5) of rule (4).
3, compasses according to claim 1 is characterized in that and can only establish vernier (3) on the rule pin (2) therein that rule (4) origin or beginning is fixed on another rule pin (2) position parallel with vernier (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00246797 CN2435244Y (en) | 2000-08-25 | 2000-08-25 | Compasses with staff |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00246797 CN2435244Y (en) | 2000-08-25 | 2000-08-25 | Compasses with staff |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2435244Y true CN2435244Y (en) | 2001-06-20 |
Family
ID=33605957
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00246797 Expired - Fee Related CN2435244Y (en) | 2000-08-25 | 2000-08-25 | Compasses with staff |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2435244Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101941346A (en) * | 2010-10-27 | 2011-01-12 | 唐供宾 | Compass |
-
2000
- 2000-08-25 CN CN 00246797 patent/CN2435244Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101941346A (en) * | 2010-10-27 | 2011-01-12 | 唐供宾 | Compass |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |