CN2158353Y - Convenient instrument for drawing angles - Google Patents
Convenient instrument for drawing angles Download PDFInfo
- Publication number
- CN2158353Y CN2158353Y CN 93206442 CN93206442U CN2158353Y CN 2158353 Y CN2158353 Y CN 2158353Y CN 93206442 CN93206442 CN 93206442 CN 93206442 U CN93206442 U CN 93206442U CN 2158353 Y CN2158353 Y CN 2158353Y
- Authority
- CN
- China
- Prior art keywords
- angle
- slide rule
- circle
- semi
- instrument
- 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 - Lifetime
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Abstract
The utility model relates to an instrument for drawing angles, comprising a half circle arc side (1) having an angle and graduation, a straight rule-shaped bottom side (2) and an angle slide rule (4). A groove (6) is arranged on the slide rule, and the half circle arc side (1) is embedded in the groove (6) of the slide rule which can be slid on the half circular arc side. The center (3) of the slide rule aims at the center of the circle of the instrument for drawing angles, and the instrument is arranged on the bottom side. The angle measuring and drawing an angle with known degree are convenient by using the instrument for drawing angles as compared with an ordinary protractor.
Description
The utility model relates to a kind of structure of drawing the angle measurer.
Picture angle measurer commonly used is that protractor is the transparent panel of a semicircle shape, indicate the scale of angle above, when taking measurement of an angle, the center of circle of protractor is overlapped with the summit at angle, the zero degree line of protractor overlaps with the one side at angle, and the reading of another side indication is the number of degrees of measured angle.When drawing the angle of definite number of degrees, then need the center of circle of protractor and the summit and the true edge at zero degree line and drawn angle are coincided, the scale from the protractor is determined the position of another side again, then with the ruler another side that draws.
The purpose of this utility model is the picture angle measurer that proposes another kind of structure, and is more convenient when measuring and draw the angle.
This easy picture angle measurer comprises that one has the semi-circle edge and a ruler shape base of angle index, the two ends of semi-circle edge and the two ends on base are connected together, it also comprises a leg-of-mutton angle slide rule, one groove is arranged on the slide rule, semi-circle edge is embedded in the groove of slide rule, slide rule can slide on semi-circle edge, the top center of circle facing to picture angle measurer on the base of slide rule.
This easy picture angle measurer, when being used to take measurement of an angle, the summit of the center of circle and measured angle can be coincided, the upper limb on ruler shape base is that one side of zero degree line and measured angle coincides, mobile slide rule, the straight flange of slide rule and the another side of measured angle are coincided, can read the number of degrees at this angle from the position of straight flange on semi-circle edge of slide rule.When drawing the angle of the known number of degrees, as long as slide rule is moved to required scale, promptly available pen is along the straight flange of the upper limb on ruler shape base and the slide rule required angle of drawing.Use and make things convenient for manyly than common protractor.
Accompanying drawing 1 is the outline drawing of this easy picture angle measurer;
Accompanying drawing 2 is the cutaway view of slide rule.
As shown in Figure 1, (1) is semi-circle edge, indicate angle index above, (2) be ruler shape base, the center of its top edge is the center of circle of picture angle measurer, and top edge indicates the length scale, (4) be the angle slide rule, rely on a groove to match with semi-circle edge (1), when slide rule slided on semi-circle edge, top (3) of slide rule faced toward the center of circle of picture angle measurer all the time.Two straight flanges (5) of slide rule can be used for the picture angle.Can also indicate scale on two straight flanges (5) of slide rule, when drawing angle, also can determine the length of the arm of angle easily like this, for example be used for the picture triangle.
As shown in Figure 2, the cross section of the groove on the slide rule (6) can be swallow-tail form, with draw the combination better of angle measurer semi-circle edge.The thickness of groove part slide rule can be done thicklyer.
Claims (2)
1, a kind of easy picture angle measurer, comprise that one has the semi-circle edge (1) of angle index and the base (2) of a ruler shape, the two ends of semi-circle edge and the two ends on base are connected together, it is characterized in that it also comprises a leg-of-mutton angle slide rule (4), one groove (6) is arranged on the slide rule, semi-circle edge (1) is embedded in the groove (6) of slide rule, and slide rule can slide on semi-circle edge, and top (3) of slide rule are facing to the center of circle of drawing the angle measurer on the base.
2, easy picture as claimed in claim 1 angle measurer is characterized in that the straight flange (5) of described slide rule (4) is marked with scale.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93206442 CN2158353Y (en) | 1993-03-06 | 1993-03-06 | Convenient instrument for drawing angles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93206442 CN2158353Y (en) | 1993-03-06 | 1993-03-06 | Convenient instrument for drawing angles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2158353Y true CN2158353Y (en) | 1994-03-09 |
Family
ID=33789449
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93206442 Expired - Lifetime CN2158353Y (en) | 1993-03-06 | 1993-03-06 | Convenient instrument for drawing angles |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2158353Y (en) |
-
1993
- 1993-03-06 CN CN 93206442 patent/CN2158353Y/en not_active Expired - Lifetime
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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 | ||
| CX01 | Expiry of patent term |