CN201841833U - Multifunctional triangle - Google Patents

Abstract

The utility model relates to a multifunctional triangle which is characterized in that the outer edge angles of the triangle are arc, a semi-circular protractor is arranged in the middle, the scale mark is distributed uniformly along two edges of the triangle and the semi-circular curved edge, and another edge is provided with scales at intervals of 2 millimeters simultaneously, and holes are arranged below the scales in sequence from left to right. The multifunctional triangle has the advantages of being capable of preventing the outer edge angles thereof from being broken, having the functions of drawing set radius cycles and measuring angles, and being extremely convenient to use.

Description

A kind of multifunctional triangle

Affiliated technical field

The utility model relates to a kind of stationery, relates in particular to the set square in conjunction with multiple function.

Background technology

Normally used set square has only the length of measurement and draw corresponding leg-of-mutton function, the not only size that can not take measurement of an angle, nor the circle of predetermined radius that can draw, the angle of most of set squares is very fragile simultaneously, fractures easily in use, makes troubles for daily study.

Summary of the invention

For solving the deficiency of above-mentioned common set square, the utility model provides a kind of and has taken measurement of an angle, the circle of the predetermined radius of can drawing, can effectively prevent the multifunctional triangle that edge angle fractures.

The technical scheme that the utility model adopted is: 1. digging out a semicircle in right angle triangle, is the protractor center with the center of semicircle, engraves the protractor scale on the bent limit of semicircle; 2. on two limits of right angle triangle, engrave spacing and be 1 millimeter ruler scale; 3. on an other limit, engrave spacing and be 2 millimeters scale, below scale, from left to right establish the hole simultaneously successively; 4. do three outward flange angles on the set square main body in the arc-shaped.

Advantage of the present utility model is that processing is simple, powerful.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

The specific embodiment

As shown in Figure 1, the utility model is that (7) in the arc-shaped are done at three outward flange angles of set square (1), a semicircle (6) is dug out on the surface of set square (1), on the bent limit of two limits of set square (1) and semicircle (6), engrave scale (4), engrave simultaneously spacing and be 2 millimeters scale (3) on an other limit, scale (3) below is from left to right established hole (2) successively.When using, the user can normally use set square (1) to measure or paint; When the user draws circular pattern, measure circular radius earlier, one root pointer is inserted in the aperture (2), be inserted in another aperture (2) with pencil then, must guarantee that distance between two apertures (2) equals radius of a circle to be painted and gets final product, be initial point rotary triangle plate (1) with the pointer point at last, the figure that pencil stays on paper just is the figure of circle to be painted.

Claims (1)

1. multifunctional triangle, it is characterized in that: its outward flange angle is a circular arc, the centre is provided with protractor, graduation mark evenly distributes along two limits of set square and the bent limit of protractor, on an other limit, engrave spacing and be 2 millimeters scale, below scale, from left to right establish the hole simultaneously successively.

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