CN201849179U - Protractor - Google Patents
Protractor Download PDFInfo
- Publication number
- CN201849179U CN201849179U CN2010205820150U CN201020582015U CN201849179U CN 201849179 U CN201849179 U CN 201849179U CN 2010205820150 U CN2010205820150 U CN 2010205820150U CN 201020582015 U CN201020582015 U CN 201020582015U CN 201849179 U CN201849179 U CN 201849179U
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- CN
- China
- Prior art keywords
- protractor
- utility
- model
- pointer
- angle
- 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
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- Length-Measuring Instruments Using Mechanical Means (AREA)
Abstract
The utility model discloses a protractor, which comprises a protractor body. The utility model is characterized in that a pointer using the bottom side center of the protractor body as a fixed point is arranged on the protractor body, and the length of the pointer is the same as the radius of the protractor body. The protractor can be used for accurately measuring angles without extending the angle sides.
Description
Technical field
The utility model relates to a kind of protractor.
Background technology
At present, the employed common protractor of student exists pin to be measured limit to need to prolong just energy measurement of the arm of angle more in short-term, and is therefore cumbersome.
The utility model content
Technical problem to be solved in the utility model provides a kind of arm of angle that need not to prolong, the just protractor that can accurately take measurement of an angle.
For realizing above purpose, technical solution of the present utility model is: a kind of protractor, comprise the protractor body, it is characterized in that: it is the pointer of fixed point with center, described protractor body base that described protractor body is provided with one, and the length of described pointer is identical with the radius of described protractor body.
Compared with prior art, the beneficial effects of the utility model are:
1. because a kind of protractor protractor body of the present utility model is provided with one is the pointer of fixed point with center, protractor body base, the length of pointer is identical with the radius of protractor body, during measurement as long as with pointer and treat that the angle measurement arm of angle is to it, need not to prolong again the arm of angle, therefore the utility model need not to prolong the arm of angle, just can accurately take measurement of an angle.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Among the figure: protractor body 10, pointer 12.
The specific embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in further details
Referring to shown in Figure 1, a kind of protractor comprises protractor body 10, and it is the pointer 12 of fixed point with center, protractor body 10 base that protractor body 10 is provided with one, and the length of pointer 12 is identical with the radius of protractor body 10.During measurement as long as with pointer 12 with treat that the angle measurement arm of angle to it, need not to prolong the arm of angle again.
Therefore the utility model need not to prolong the arm of angle, just can accurately take measurement of an angle.
The above only is a better embodiment of the present utility model; protection domain of the present utility model does not exceed with above-mentioned embodiment; as long as the equivalence that those of ordinary skills do according to the utility model institute disclosure is modified or changed, all should include in the protection domain of putting down in writing in claims.
Claims (1)
1. a protractor comprises the protractor body, it is characterized in that: it is the pointer of fixed point with center, described protractor body base that described protractor body is provided with one, and the length of described pointer is identical with the radius of described protractor body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205820150U CN201849179U (en) | 2010-10-29 | 2010-10-29 | Protractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205820150U CN201849179U (en) | 2010-10-29 | 2010-10-29 | Protractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201849179U true CN201849179U (en) | 2011-06-01 |
Family
ID=44091590
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205820150U Expired - Fee Related CN201849179U (en) | 2010-10-29 | 2010-10-29 | Protractor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201849179U (en) |
-
2010
- 2010-10-29 CN CN2010205820150U patent/CN201849179U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110601 Termination date: 20111029 |