CN102381108A - Protractor - Google Patents
Protractor Download PDFInfo
- Publication number
- CN102381108A CN102381108A CN2010102735875A CN201010273587A CN102381108A CN 102381108 A CN102381108 A CN 102381108A CN 2010102735875 A CN2010102735875 A CN 2010102735875A CN 201010273587 A CN201010273587 A CN 201010273587A CN 102381108 A CN102381108 A CN 102381108A
- Authority
- CN
- China
- Prior art keywords
- protractor
- angle
- ruler
- eyelet
- main 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.)
- Pending
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- Length-Measuring Instruments Using Mechanical Means (AREA)
Abstract
The invention provides a protractor which is connected with a ruler at the side of a main body. The main body of the protractor is provided with an angle intersection eyelet and further a small semi-circular hollowed strip. By above settings, the protractor has multiple using functions of measuring length and angles. The angle intersection eyelet can be used as a peak to position during angle measurement so that the angle measured is more accurate.
Description
Technical field
The present invention relates to a kind of surveying and mapping tool, a kind of specifically protractor with ruler.
Background technology
Common protractor can only use as the certain angle of measuring and calculating, and drawing straight line needs use ruler in addition with measuring and calculating length, and simultaneously, traditional protractor can only indicate the angle of certain semicircle distance, and is then can't disposable accurately sign after less than the protractor semicircle clear.
Summary of the invention
The present invention provides a kind of protractor, has the characteristics that ruler uses and can favourable accurate sign angle that can be used as.
The present invention includes the protractor body, the technical scheme that is adopted is: said protractor is connected with a ruler at the side of body.
The body of protractor is provided with angular cross point eyelet.
On body, also be provided with a small semicircle hollow out bar.
Beneficial effect of the present invention is: through above-mentioned setting, make it protractor and have and can calculate length and big low-angle multiple function of use, when its angular cross point eyelet can conveniently be calculated angle, locate as the summit, make angle meter more accurate.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is made further detailed description.
Accompanying drawing is a structural representation of the present invention.
The specific embodiment
Shown in the accompanying drawing embodiment: protractor is connected with a ruler 2 at the side of body 1.The body 1 of protractor is provided with angular cross point eyelet 3.On body 1, also be provided with a small semicircle hollow out bar 4.
Claims (3)
1. a protractor comprises protractor body (1), it is characterized in that: said protractor is connected with a ruler (2) at the side of body (1).
2. a kind of protractor according to claim 1 is characterized in that: the body of protractor (1) is provided with angular cross point eyelet (3).
3. a kind of protractor according to claim 1 is characterized in that: on body (1), also be provided with a small semicircle hollow out bar (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102735875A CN102381108A (en) | 2010-08-27 | 2010-08-27 | Protractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102735875A CN102381108A (en) | 2010-08-27 | 2010-08-27 | Protractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102381108A true CN102381108A (en) | 2012-03-21 |
Family
ID=45821102
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102735875A Pending CN102381108A (en) | 2010-08-27 | 2010-08-27 | Protractor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102381108A (en) |
-
2010
- 2010-08-27 CN CN2010102735875A patent/CN102381108A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120321 |