CN201941430U - Multifunctional protractor - Google Patents
Multifunctional protractor Download PDFInfo
- Publication number
- CN201941430U CN201941430U CN2010206325343U CN201020632534U CN201941430U CN 201941430 U CN201941430 U CN 201941430U CN 2010206325343 U CN2010206325343 U CN 2010206325343U CN 201020632534 U CN201020632534 U CN 201020632534U CN 201941430 U CN201941430 U CN 201941430U
- Authority
- CN
- China
- Prior art keywords
- triangle
- graphometer
- circle
- locating hole
- protractor
- 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
Abstract
The utility model relates to a multifunctional protractor. Length scales are added on the straight line edge of a common protractor thus the multifunctional protractor has the function of the ruler; a positioning hole is arranged in the center of the circle and one positioning hole is arranged along the vertical direction of the center of the circle and three positioning holes are arranged on the edge of the straight line, thus the five positioning holes form the equilateral triangle, the isosceles right-angled triangle and the right0angled triangle with inner angles respectively being 30,60 degree. The pattern is convenient drawn, the operation step is simplified and the time is saved.
Description
Technical field
The utility model relates to a kind of drafting instrument, particularly a kind of graphometers of using more.
Background technology
Graphometer is the instrument that students in middle and primary schools often use, but its function ratio is more single.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of graphometer of using is provided more.
The technical solution of the utility model is:
A kind of graphometer of using more, the linear edge increase length scale at common graphometer makes it to have the function of ruler; Make a locating hole at circle centre position, the vertical direction in the center of circle is made a locating hole, makes three locating holes again at linear edge, makes it to form the right angled triangle that equilateral triangle, isosceles right triangle, interior angle are respectively 30 °, 60 ° with preceding two locating holes.
During mapping, according to the needs of drawn figure angle, many linear edge measured lengths with graphometer are being used in many earlier locating hole location with graphometer.
The beneficial effect that the utility model had is:
Adopt the utility model, can utilize a graphometer to finish the drafting that equilateral triangle, isosceles right triangle, interior angle are respectively 30 °, 60 ° special geometric figures such as right angled triangle, conveniently carry out graphic plotting, the step that simplifies the operation has been saved the time.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
The specific embodiment
The utility model is described in further detail below in conjunction with the drawings and the specific embodiments.
As shown in Figure 1, a kind of graphometers of using more, the linear edge 2 increase length scales at common graphometer 1 make it to have the function of ruler; Make a locating hole 3 at circle centre position, the vertical direction in the center of circle is made a locating hole 4, make three locating holes again at linear edge, be respectively locating hole 5,6,7, locating hole 4,5,6 connections can formation equilateral triangle, locating hole 3,4,7 connect isosceles right triangles, locating hole 3,4,6 connects the right angled triangle that interior angles are respectively 30 °, 60 ° but make.
During mapping, according to the needs of drawn figure angle, many linear edge measured lengths with graphometer are being used in many earlier locating hole location with graphometer.
Foregoing description is illustrative rather than determinate, therefore in the variation and the modification that do not break away under the utility model general plotting, should belong within the protection domain of the present utility model.
Claims (1)
1. using graphometer one kind more, it is characterized in that: the linear edge (2) in common graphometer (1) increases the length scale, makes it to have the function of ruler; Make a locating hole (3) at circle centre position, the vertical direction in the center of circle is made a locating hole (4), make three locating holes again at linear edge, make it to form the right angled triangle that equilateral triangle, isosceles right triangle, interior angle are respectively 30 °, 60 ° with preceding two locating holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206325343U CN201941430U (en) | 2010-11-30 | 2010-11-30 | Multifunctional protractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206325343U CN201941430U (en) | 2010-11-30 | 2010-11-30 | Multifunctional protractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201941430U true CN201941430U (en) | 2011-08-24 |
Family
ID=44468782
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206325343U Expired - Fee Related CN201941430U (en) | 2010-11-30 | 2010-11-30 | Multifunctional protractor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201941430U (en) |
-
2010
- 2010-11-30 CN CN2010206325343U patent/CN201941430U/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: 20110824 Termination date: 20111130 |