CN2323348Y - Multifunctional plotting ruler - Google Patents
Multifunctional plotting ruler Download PDFInfo
- Publication number
- CN2323348Y CN2323348Y CN 97228102 CN97228102U CN2323348Y CN 2323348 Y CN2323348 Y CN 2323348Y CN 97228102 CN97228102 CN 97228102 CN 97228102 U CN97228102 U CN 97228102U CN 2323348 Y CN2323348 Y CN 2323348Y
- Authority
- CN
- China
- Prior art keywords
- ruler
- substrate
- square
- bevel protractor
- functional
- 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)
- Drawing Aids And Blackboards (AREA)
Abstract
The utility model discloses a multifunctional plotting ruler, relating to a surveying instrument used for teaching and engineering. The utility model comprises a base board, an angle measuring ruler, and a vertical ruler which are assembled together. The middle lower part of the base plate is connected with the angle measuring ruler by a mandrel. The external surface of the angle measuring ruler is uniform with the external surface of the base plate. A T-shaped groove at the lower part of the base plate is fixed with the vertical ruler by a screw bolt. The multifunctional plotting ruler can not only plot straight lines, vertical lines, angles, and geometrical figures, but also can demonstrate and calculate the side length and the included angle in right triangles, and the corresponding relation of the both, so that the application of the pythagorean theorem is visual and simple.
Description
Multi-functional graphometric square relates to and is used for teaching and engineering mapping instrument.
In the mapping process of daily teaching, engineering design and manufacturing, people handle every work such as application of mapping length, angle and the right-angle triangle length of side, angle and both relations, Pythagorean theorem usually.Can buy, adopt mostly in the practical application instrument of surveying and mapping of single or simple combination on the market, as ruler, set square, T-square, rotary ruler, graphometer, how much draughting boards etc.Its deficiency is a whole set of instrument of surveying and mapping that need to be equipped with various functions, and in use will often change instrument or carry out some auxiliary calculating of how much of triangles with counter, exists trivial operations to a certain extent, wastes time and energy, defective such as inefficiency.
The purpose of this utility model is more complete, easy and simple to handle, the efficient Multifunction graphometric square intuitively of a kind of function of design.
Multi-functional graphometric square comprises substrate, bevel protractor and the miter square that fits together, its design feature is to be connected with bevel protractor in the middle and lower part of substrate with mandrel, the outside surface of bevel protractor flushes with the outside surface of substrate, in the T of substrate bottom shape groove, with bolt miter square is arranged.
The top of the substrate of multi-functional graphometric square and right lower quadrant are provided with 2 group length scales, and the centre is the semicircle open-work, is provided with angle index, and two ends are distributed with multiple geometric figure commonly used hole; The straight flange of bevel protractor is the length scale, and it is 2 ' angle index that the circular arc limit is provided with precision; The long limit of miter square is the length scale.
Because bevel protractor can freely rotate in 150 ° of scopes, miter square can move along substrate long side direction straight line, therefore, bevel protractor, miter square constitute countless right-angle triangles with substrate, like this, multi-functional graphometric square can not only synthetically be surveyed and drawn the geometric figure of straight line, vertical line, angle and different shape, and can also demonstrate and calculate the corresponding relation of the length of side and the length of side, angle and angle and the length of side and angle in the right-angle triangle intuitively, simultaneously, make the application of Pythagorean theorem more directly perceived, easy.
Accompanying drawing has provided structure and the fundamental diagram of multi-functional graphometric square embodiment.
In the present embodiment, multi-functional graphometric square comprises substrate 1, and the top of substrate 1 and right lower quadrant are provided with 2 group length scales, and the centre is the semicircle open-work, is provided with angle index, and two ends are distributed with the geometric figure hole; Middle and lower part at substrate 1 is connected with bevel protractor 2 with mandrel 4, and the straight flange of bevel protractor 2 is the length scale, and it is 2 ' angle index that the circular arc limit is provided with precision, and the outside surface of bevel protractor 2 flushes with the outside surface of substrate 1, and bevel protractor 2 can rotate in 150 ° of scopes; In the T shape groove of substrate 1 bottom, be fixed with miter square 3 with bolt 5, the long limit of miter square 3 is the length scale, miter square 3 can move along substrate long side direction straight line in T shape groove, does temporary fixed with bolt 5.Substrate 1, bevel protractor 2 and miter square 3 select for use polymethylmethacrylate through injection moulding and/or select for use stainless steel material through impact briquetting.
Claims (3)
1, a kind of multi-functional graphometric square comprises substrate (1), it is characterized in that being connected with bevel protractor (2) in the middle and lower part of substrate (1) with mandrel (4), in the following T shape groove of substrate (1), is fixed with miter square (3) with bolt (5).
2, according to the said multi-functional graphometric square of claim 1, it is characterized in that the top of substrate (1) and right lower quadrant are the length scale, the centre is the semicircle open-work, is provided with angle index, two ends are distributed with the geometric figure hole; The straight flange of bevel protractor (2) is the length scale, and it is 2 ' angle index that the circular arc limit is provided with precision; The long limit of miter square (3) is the length scale.
3,, it is characterized in that the outside surface of bevel protractor (2) flushes with the outside surface of substrate (1) according to the said multi-functional graphometric square of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97228102 CN2323348Y (en) | 1997-10-07 | 1997-10-07 | Multifunctional plotting ruler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97228102 CN2323348Y (en) | 1997-10-07 | 1997-10-07 | Multifunctional plotting ruler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2323348Y true CN2323348Y (en) | 1999-06-09 |
Family
ID=33941338
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97228102 Expired - Fee Related CN2323348Y (en) | 1997-10-07 | 1997-10-07 | Multifunctional plotting ruler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2323348Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106705775A (en) * | 2017-01-20 | 2017-05-24 | 陈天鸿 | Irrational number intuitive measurement method and rule based on Pythagorean theorem |
-
1997
- 1997-10-07 CN CN 97228102 patent/CN2323348Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106705775A (en) * | 2017-01-20 | 2017-05-24 | 陈天鸿 | Irrational number intuitive measurement method and rule based on Pythagorean theorem |
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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 |