Multifunctional drawing ruler

Abstract

The invention relates to a multifunctional drawing ruler which is formed by combining a primary ruler body and a secondary ruler body through a fixing button, wherein the primary ruler body and the secondary ruler body are marked with scales; the fixing button is provided with a hand screw, the primary ruler body is provided with a through groove, the two sides of a sliding block are provided with grooves, the groove on one side of the sliding block is provided with two fastening screws, the sliding block is connected with the through groove in the primary ruler body in a matched mode through the grooves in the two sides of the sliding block, the center position of the upper surface of the sliding block is provided with a through hole and a convex cylindrical buckle, the secondary ruler body is provided with a through groove, the length of the through groove in the secondary ruler body reach to the position of the fixing button, and the width of the through groove in the secondary ruler body is larger than the width of the through groove in the primary ruler body; a string is connected between the fixing button and the convex cylindrical buckle of the sliding block. When the multifunctional drawing ruler is used, an arbitrary angle, parallel lines, a circle, an oval and other geometric figures can be drawn as needed by moving the sliding block and the fixing button. The multifunctional drawing ruler is simple in structure and convenient to use and brings convenience to teaching of teachers and to learning of pupils.

Description

technical field [0001] The invention relates to a drawing tool, in particular to a multifunctional drawing ruler suitable for use by teachers, students and professional technicians in the fields of architectural surveying and mapping, mathematics and mechanical drawing. Background technique [0002] In order to integrate the drawing and measurement of length, angle and geometric figures, many products that combine and improve the existing drawing tools have appeared on the market. A large part of these products are simple combinations of the above functions. To a certain extent, the integration of multiple functions has been realized, but it also causes the product itself to have a complex structure, large volume, and bulky, and the shape design cannot well meet people's usage habits. Hollowing out into common geometric figures or changing the outline of the ruler body to synthesize the functions of the drawing ruler has poor flexibility, and the size of the drawn geometr...

AI Technical Summary

Problems solved by technology

The learning teachers of the conic section of the mathematics part often need to draw ellipses, but due to the lack of teaching aids that can draw ellipses or the lack of school equipment due to reasons such as cost, teachers often draw ellipses by hand and then "modify" ”, which leads to inaccuracies affecting the quality of teaching

In many courses such as mathematics, physics, and mechanical drawing, the drawing of angles, line segments, graphics, and coordinate systems is very common. In the process of drawing, it often requires the use of multiple drawing tools, which is neither convenient nor vivid.

Images