CN201665093U - Protractor - Google Patents
Protractor Download PDFInfo
- Publication number
- CN201665093U CN201665093U CN2010201224952U CN201020122495U CN201665093U CN 201665093 U CN201665093 U CN 201665093U CN 2010201224952 U CN2010201224952 U CN 2010201224952U CN 201020122495 U CN201020122495 U CN 201020122495U CN 201665093 U CN201665093 U CN 201665093U
- Authority
- CN
- China
- Prior art keywords
- protractor
- scale
- angle
- ruler
- protractor body
- 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
- 230000009286 beneficial effect Effects 0.000 description 1
Landscapes
- Drawing Aids And Blackboards (AREA)
Abstract
The utility model discloses a protractor, which belongs to stationeries, the utility model relates to a protractor which is conveniently and quickly capable of drawing an angle required without using a ruler. The protractor comprises a protractor body, and is characterized in that: the middle part of the protractor body is provided a notch, the base measuring reference point of the protractor body is provided with a scale, which is a ruler, one end of the ruler is connected to the protractor body via a pivot, the other end is a free end, the length of the scale is no less than that of the cylindrical radius of the protractor body. When using the protractor, aligning the measuring reference point of the protractor body with the vertex of the angle, and moving the scale to the scale mark of the angle required, then utilizing the cooperation of the protractor notch edge with the scale to quickly and conveniently drawing the angle required, without using any rulers, the protractor is advantaged by convenient use and high efficiency.
Description
Technical field
The utility model relates to a kind of stationery, specifically a kind of protractor.
Background technology
Present stationery style constantly updates, but protractor is as the but not too big change of the requisite specific purpose tool of study geometric figure, can not directly draw during angle that traditional protractor is drawn the standard number of degrees, need a some point on corresponding angle earlier, use the ruler line then, just can the draw angle of the standard number of degrees is come, and uses cumbersome.
The utility model content
The purpose of this utility model is to provide a kind of protractor, and this protractor is easy to use, need not the angle that first line just can directly draw standard angle, and is easy to use, the efficient height.
The technical scheme in the invention for solving the technical problem is: a kind of protractor, comprise the protractor body, and it is characterized in that described protractor body middle part is a breach, the datum mark place is equipped with a scale on the base of protractor body; Described scale is a ruler, and scale one end is connected with the protractor body by a rotating shaft, and the other end is a free end; The length of described scale is not less than the exradius of protractor body.
Described breach base is a straight flange.
The beneficial effects of the utility model are: need not the angle that first line just can directly draw standard angle when using this protractor, need not multiple ruler and cooperate, and very easy to use, the efficient height.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Among the figure: 1 protractor body, 2 rotating shafts, 3 scales.
The specific embodiment
As shown in Figure 1.A kind of protractor comprises protractor body 1, and described protractor body 1 middle part is a breach, at datum mark place, the base of protractor body 1 one scale 3 is installed; Described scale 3 is a ruler, and scale 3 one ends are connected with protractor body 1 by a rotating shaft 2, and the other end is a free end; The length of described scale 3 is not less than the exradius of protractor body 1.
For the ease of people be convenient to draw when the drawing angle limit at angle, described breach base is a straight flange.
During use, place, summit with the datum mark alignment angle of protractor body, scale is moved to the graduation mark place of required angle, just gap edge and scale cooperate the angle of the required angle of drawing quickly and easily on can utilization hornwork body, need not multiple ruler cooperates, very easy to use, the efficient height.
Claims (2)
1. a protractor comprises the protractor body, it is characterized in that, described protractor body middle part is a breach, and the datum mark place is equipped with a scale on the base of protractor body; Described scale is a ruler, and scale one end is connected with the protractor body by a rotating shaft, and the other end is a free end; The length of described scale is not less than the exradius of protractor body.
2. a kind of protractor according to claim 1 is characterized in that, described breach base is a straight flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201224952U CN201665093U (en) | 2010-03-03 | 2010-03-03 | Protractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201224952U CN201665093U (en) | 2010-03-03 | 2010-03-03 | Protractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201665093U true CN201665093U (en) | 2010-12-08 |
Family
ID=43266045
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201224952U Expired - Fee Related CN201665093U (en) | 2010-03-03 | 2010-03-03 | Protractor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201665093U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103522804A (en) * | 2013-10-22 | 2014-01-22 | 无锡俊达测试技术服务有限公司 | Protractor |
-
2010
- 2010-03-03 CN CN2010201224952U patent/CN201665093U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103522804A (en) * | 2013-10-22 | 2014-01-22 | 无锡俊达测试技术服务有限公司 | Protractor |
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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: 20101208 Termination date: 20110303 |