CN202879048U - Novel plotting instrument - Google Patents

Abstract

The utility model discloses a novel plotting instrument which is characterized in that a bottom part of a protractor is provided with a transverse hollow which runs through the center of a circle; a 90 degree hollow, a 30 degree hollow, and a 45 degree hollow are respectively arranged at the middle and two sides of the protractor; an edge of the bottom part of the protractor is provided with a calibrated ruler; and multiple small holes are arranged in such a way that the small holes correspond to the scale of the calibrated ruler. Through the above arrangement, the novel plotting instrument can be used as a protractor and can fulfill the functions of a straight ruler, compasses, and a triangle ruler. The novel plotting instrument is advantaged by portability, convenience of use, and saved space.

Description

The New type drawing instrument

Technical field

The utility model relates to a kind of stationery, is specifically related to a kind of New type drawing instrument.

Background technology

In the daily teaching, Faculty and Students are drawing, need to prepare the set square of ruler, compasses, protractor and two kinds of angles etc. when measuring, and it is large to take up room, and carry very inconveniently, have also increased the expense of buying simultaneously, cause burden to the student.

Summary of the invention

The purpose of this utility model is that a kind of New type drawing instrument with ruler, compasses and set square function is provided.

To achieve these goals, the utility model passes the center of circle in the bottom of protractor and is provided with horizontal hollow out, 90 degree hollow outs, 30 degree hollow outs and 45 degree hollow outs are located at respectively centre and the both sides of protractor, bottom margin at protractor is provided with rule, a plurality of apertures respectively with the corresponding setting of scale of rule.

By above setting, the utility model not only can use as protractor, also can realize the function of ruler, compasses and set square, is easy to carry, and is easy to use, saved the space.

Description of drawings

Now by reference to the accompanying drawings the utility model is described further.

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

Among the figure: 1, protractor, 2, horizontal hollow out, 3,90 degree hollow outs, 4,30 degree hollow outs, 5,45 degree hollow outs, 6, rule, 7, aperture.

The specific embodiment

As shown in Figure 1, the utility model passes the center of circle and is provided with horizontal hollow out 2 in the bottom of protractor 1,90 degree hollow outs 3,30 degree hollow outs 4 and 45 degree hollow outs 5 are located at respectively centre and the both sides of protractor 1, bottom margin at protractor 1 is provided with rule 6, a plurality of apertures 7 respectively with the corresponding setting of scale of rule 6.By above setting, the utility model can be done protractor and use, can also draw the angle by horizontal hollow out 2,90 degree hollow outs 3,30 degree hollow outs 4 and 45 degree hollow outs 5, when the compasses time spent, first nib is inserted the aperture 7 fixing centers of circle that need the picture circle of an end, determine again the scale position of aperture 7 according to need picture radius of circle, insert pen and rotate a circle, can the picture circle.

Claims (1)

1. New type drawing instrument, it is characterized in that: pass the center of circle in the bottom of protractor and be provided with horizontal hollow out, 90 degree hollow outs, 30 degree hollow outs and 45 degree hollow outs are located at respectively centre and the both sides of protractor, bottom margin at protractor is provided with rule, a plurality of apertures respectively with the corresponding setting of scale of rule.

Images