CN201061960Y - Multipurpose semi-circle instrument - Google Patents
Multipurpose semi-circle instrument Download PDFInfo
- Publication number
- CN201061960Y CN201061960Y CNU2007200222055U CN200720022205U CN201061960Y CN 201061960 Y CN201061960 Y CN 201061960Y CN U2007200222055 U CNU2007200222055 U CN U2007200222055U CN 200720022205 U CN200720022205 U CN 200720022205U CN 201061960 Y CN201061960 Y CN 201061960Y
- Authority
- CN
- China
- Prior art keywords
- graphometer
- scale
- semicircle
- circle
- utility
- 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 multipurpose semicircle instrument, which belongs to a teaching aid, in particular to a geometric teaching aid. The structure of the multipurpose semicircle is that the semicircle instrument is provided with a transparent rotating scale which adopts the circle center of the semicircle as a rotating axis, a central line which penetrates the circle center is arranged on the rotating scale, a foldable chalk erector is arranged on the top end of the rotating scale, a foldable stationary needle is arranged on the zero scale mark of the semicircle instrument, and length scales are arranged on the diameter edge of the semicircle instrument. The utility model has the functions of circle measuring, angle line drawing, which can be also used as a compass, and the utility model has simple structure, small volume, and convenient employment.
Description
Affiliated technical field
The utility model belongs to a kind of teaching aid, particularly the several teaching teaching aid.
Background technology
Graphometer is study and the teaching aid of using always, its major function is to take measurement of an angle, what have draws scale on the diameter limit of graphometer, can make rule uses, need be with graphometer point on corresponding scale location point earlier but draw angle line, again with just can the draw angle line of two certain angles of the point of ruler join dependency.
Summary of the invention
The purpose of this utility model provides a kind of two angle lines of certain angle that can draw easily, and can do the technical scheme of the novel graphometer of compasses use.
The technical solution of the utility model is, a kind of graphometer of using more, its structure is: being equipped with on the graphometer with its center of circle is the transparent turn chi of turning cylinder, on the described turn chi center line that passes the center of circle is arranged, folding chalk erector is equipped with on the chi top, folding locking pin is equipped with at graphometer 0 scale place, and the graphometer diameter has the length scale on the limit.
Described turn chi has scale numerical value peep hole near graphometer scale place.
Use the utility model disclosed many with graphometer except can taking measurement of an angle, two angle lines of certain angle can draw along the diameter limit of graphometer and turn chi limit, with locking pin is that the circle that the chalk on the graphometer chalk erector can be drawn various radiuses is rotated in the center of circle, and its diameter limit can be made ruler and be used.
The utlity model has and take measurement of an angle, draw angle line, when purposes such as compasses, ruler uses, its volume simple in structure is little easy to use.
Description of drawings
Accompanying drawing is a structural representation of the present utility model,
Among the figure, 1. graphometer, 2. turning cylinder, 3. turn chi, 4. scale numerical value peep hole, 5. chalk erector, 6. locking pin.
The specific embodiment
The specific embodiment of the present utility model is, as shown in the figure:
Claims (2)
1. use graphometer one kind more, it is characterized in that: being equipped with on the graphometer with its center of circle is the transparent turn chi of turning cylinder, on the described turn chi center line that passes the center of circle is arranged, folding chalk erector is equipped with on the chi top, folding locking pin is equipped with at graphometer 0 scale place, and the graphometer diameter has the length scale on the limit.
2. use graphometer by claim 1 is determined, it is characterized in that: described turn chi has scale numerical value peep hole near graphometer scale place more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200222055U CN201061960Y (en) | 2007-05-16 | 2007-05-16 | Multipurpose semi-circle instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200222055U CN201061960Y (en) | 2007-05-16 | 2007-05-16 | Multipurpose semi-circle instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201061960Y true CN201061960Y (en) | 2008-05-21 |
Family
ID=39450328
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200222055U Expired - Fee Related CN201061960Y (en) | 2007-05-16 | 2007-05-16 | Multipurpose semi-circle instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201061960Y (en) |
-
2007
- 2007-05-16 CN CNU2007200222055U patent/CN201061960Y/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: 20080521 |