CN2268634Y - Combination of compass and trangle - Google Patents
Combination of compass and trangle Download PDFInfo
- Publication number
- CN2268634Y CN2268634Y CN 96237382 CN96237382U CN2268634Y CN 2268634 Y CN2268634 Y CN 2268634Y CN 96237382 CN96237382 CN 96237382 CN 96237382 U CN96237382 U CN 96237382U CN 2268634 Y CN2268634 Y CN 2268634Y
- Authority
- CN
- China
- Prior art keywords
- rib
- triangle
- trangle
- compass
- combination
- 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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- Drawing Aids And Blackboards (AREA)
Abstract
The utility model provides a plotter of the combination of compasses and a triangle. The utility model has the double function of the compasses and the triangle, and is characterized in that edge teeth are evenly distributed at the center section of the sloped edge of the triangle. Two holes for using as the center of circles are arranged at the end of the sloped edge of the triangle near the edge teeth. One right angle edge of the triangle is made in an edge tool for cutting paper, and the middle part of the triangle is provided with a protractor for measuring angles. The utility model has the advantages of low cost, convenient operation and portability.
Description
The utility model relates to a kind of drawing instrument, particularly the Combination of compass and trangle plotter.
Existing set square or compasses are unifunctional, still have " using set square " also can only draw straight line, coordinate, measuring angle more, and can not draw circle.So the student must carry compasses and two kinds of stationery of set square simultaneously.Forgeing one of them promptly brings inconvenience.
The purpose of this utility model is intended to avoid the deficiencies in the prior art and provides a kind of easy to use, and is with low cost, is easy to carry and possesses the Combination of compass and trangle of compasses and set square function.
The purpose of this utility model is to realize like this;
A kind of Combination of compass and trangle, uniform rib tooth is made in the stage casing that it is characterized in that the set square hypotenuse, and the rib paddy of rib tooth and rib peak bore two parallel apertures at a distance of 1 millimeter at the close rib tooth of the tail end place of hypotenuse, exceeding by the drawing pin pin, set square one right-angle side is the rib knife-edge.
Described Combination of compass and trangle middle part is provided with a semicircle protractor.
Further specify the utility model below by drawings and Examples;
Fig. 1 is a floor map of the present utility model, and wherein 1 is the drawing pin aperture, and 2 is the rib tooth, and 3 is the rib cutter, and 4 is protractor;
Fig. 2 is a schematic perspective view of the present utility model, and wherein 1 is the drawing pin aperture, and 2 is the rib tooth, and 3 is the rib cutter.
Fig. 3 is a use schematic diagram of the present utility model.
Suppress the utility model that forms by the Combination of compass and trangle mould with hard transparent plastic or high-quality sheet material, be uniform-distribution with the rib tooth at hypotenuse, the spacing at rib paddy and rib peak is 1 millimeter, the drawing pin aperture of hypotenuse afterbody, the 1st aperture hole heart is positioned at the point that the hypotenuse scale is O, and it is 3 millimeters point that the 2nd aperture hole heart is positioned at the hypotenuse scale.Using method is: being the center of circle with the 1st aperture when known radius is even number, is that radius is justified with the known radius; When known radius is odd number, be the center of circle with the 2nd aperture, adding 3 millimeters with known radius is that radius is justified.Make bowlder, with the fixing aperture of one piece of drawing pin (or tack), left hand is pushed down drawing pin, and the right hand is held the rib teeth directional clockwise direction that pencil is close to this scale and rotated a circle, and (as shown in Figure 3), can finish easily.
A right-angle side of the present utility model is made the rib knife-edge, the usefulness of can cutting a sheet of paper, and the middle part is equipped with protractor and can takes measurement of an angle, and we can say multi-use, and is easy to use, easy to carry, with low cost, will be subjected to students in middle and primary schools' welcome.
Claims (2)
1, a kind of Combination of compass and trangle, uniform rib tooth is made in the stage casing that it is characterized in that the set square hypotenuse, and the rib paddy of rib tooth and rib peak bore two parallel apertures at a distance of 1 millimeter at the close rib tooth of the tail end place of hypotenuse, exceeding by the drawing pin pin, set square one right-angle side is the rib knife-edge.
2, Combination of compass and trangle according to claim 1 is characterized in that described Combination of compass and trangle middle part is provided with a semicircle protractor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96237382 CN2268634Y (en) | 1996-08-27 | 1996-08-27 | Combination of compass and trangle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96237382 CN2268634Y (en) | 1996-08-27 | 1996-08-27 | Combination of compass and trangle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2268634Y true CN2268634Y (en) | 1997-11-26 |
Family
ID=33912975
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96237382 Expired - Fee Related CN2268634Y (en) | 1996-08-27 | 1996-08-27 | Combination of compass and trangle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2268634Y (en) |
-
1996
- 1996-08-27 CN CN 96237382 patent/CN2268634Y/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 |