CN2541203Y - Portable protractor - Google Patents
Portable protractor Download PDFInfo
- Publication number
- CN2541203Y CN2541203Y CN 02214467 CN02214467U CN2541203Y CN 2541203 Y CN2541203 Y CN 2541203Y CN 02214467 CN02214467 CN 02214467 CN 02214467 U CN02214467 U CN 02214467U CN 2541203 Y CN2541203 Y CN 2541203Y
- Authority
- CN
- China
- Prior art keywords
- circle
- utility
- model
- semi
- 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 convenient angle gage, which mainly resolves the questions that current angle gages are incorrect to measure angles and are inconvenient to lay out angle lines. The convenient angle gage is composed of a transparent semi-circle body which has a hollow semi-circle and graduation marks. The utility model is characterized in that the center of the semi-circle is rotatably provided with a staff gauge, the external edge of the staff gauge is lap-jointed with the graduation marks of the semi-circle body, and the right edge of the staff gauge is a ray which passes through the center of the semi-circle. While being used, the utility model can accurately measure angles or lay out the angle lines of given angles through conveniently rotating the staff gauge. The utility model is mainly adaptable to students.
Description
Affiliated technical field
The utility model relates to a kind of schooling apparatus, especially a kind of convenient protractor that can take measurement of an angle or draw angle line.
Technical background
Protractor of the prior art, because with the measured angle sideline or to be drawn arm of angle line intersection few, thereby inaccuracy when existing angle measurement to spend, the problem of inconvenience when drawing angle line.
Summary of the invention
For overcoming the shortcoming that above-mentioned prior art exists, the purpose of this utility model provides and a kind ofly takes measurement of an angle or draw angle line precision height, convenient protractor easy to use.
Main technical schemes of the present utility model is: the convenient protractor of this kind, constitute by transparent semicircular body with the band graduation mark of hollow semicircle, it is characterized in that: the center of circle in described semicircular body is fixed with a scale rotationally, the outer edge of this scale and the graduation mark of semicircular body overlap joint, the right hand edge of scale are a ray by the above-mentioned center of circle.
The beneficial effects of the utility model are: because the graduation mark of the outer edge of scale and semicircular body overlap joint, the right hand edge of scale is a ray by the above-mentioned center of circle, thereby can accurately measure angle by rotary scale easily or mark the angle line of given angle.
Description of drawings
Be elaborated below in conjunction with accompanying drawing.
Figure is a front view of the present utility model.
Among the figure, 1-semicircular body, 2-scale, 3-rotating shaft.
Specific embodiment
In the drawings, outer circular edge with the transparent plastic semicircular body (1) of hollow semicircle is provided with graduation mark, the center of circle in described semicircular body is fixed with a scale (2) rotationally by rotating shaft (3), the outer edge of this scale and the graduation mark of semicircular body overlap joint, the right hand edge of scale are a ray by the above-mentioned center of circle.Rotating shaft (3) can be located on the semicircular body, and scale is provided with the hole of matching with rotating shaft; Also rotating shaft (3) can be able to be located on the scale (2), on semicircular body (1), be provided with the hole of matching with rotating shaft.During use, can accurately measure angle by rotary scale easily or mark the angle line of given angle.
Claims (1)
1, convenient protractor, constitute by transparent semicircular body with the band graduation mark of hollow semicircle, it is characterized in that: the center of circle in described semicircular body is fixed with a scale rotationally, and the outer edge of this scale and the graduation mark of semicircular body overlap joint, the right hand edge of scale are a ray by the above-mentioned center of circle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02214467 CN2541203Y (en) | 2002-05-14 | 2002-05-14 | Portable protractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02214467 CN2541203Y (en) | 2002-05-14 | 2002-05-14 | Portable protractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2541203Y true CN2541203Y (en) | 2003-03-26 |
Family
ID=33693790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02214467 Expired - Fee Related CN2541203Y (en) | 2002-05-14 | 2002-05-14 | Portable protractor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2541203Y (en) |
-
2002
- 2002-05-14 CN CN 02214467 patent/CN2541203Y/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 | ||
| 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 |