Multipurpose ruler

Abstract

A multipurpose ruler comprises a vertical ruler body and a transverse ruler body. A sliding groove is longitudinally formed in the vertical ruler body, and the transverse ruler body is in sliding connection with the sliding groove of the vertical ruler body through a pin shaft hinged to the transverse ruler body, and an any-angle ruler is hinged to the pin shaft; angular scale lines are arranged on the top face of the pin shaft, and the transverse ruler body is vertical to the vertical ruler body; and scales are arranged on the surfaces of the vertical ruler body and the transverse ruler body. The straight line can be drawn through the vertical ruler body, and due to the fact that the transverse ruler body can vertically move along the vertical ruler body, and parallel lines can be conveniently drawn. Due to the fact that the any-angle ruler is hinged to the pin shaft, and the angular scale lines are arranged on the top face of the pin shaft, inclined lines at any angle can be conveniently drawn. The multipurpose ruler has the beneficial effects of being simple in structure and being capable of practically, conveniently and accurately drawing the lines and can be widely used as a teaching line drawing tool for blackboard drawing in finance teaching.

Description

technical field [0001] The invention relates to a line-drawing ruler for teaching, in particular to a line-drawing tool for drawing on a blackboard for teaching finance. Background technique [0002] At present, finance teachers often draw various graphics on the blackboard during the lecture process. They need to draw multiple parallel, vertical lines, oblique lines, curves, etc. At present, there is no special tool, the error is large, the speed is slow, and it is time-consuming and laborious. , in order to solve this problem, people have done many kinds of efforts, as the Chinese patent CN201020276409.3 discloses a technology named "blackboard angle liner", which introduces a blackboard angle liner, its structure includes Angle plate and line drawing ruler, the surface of the angle plate is provided with angle lines, the center of the angle plate with an I-shaped cross section is provided with a relatively rotatable rotating shaft, the middle part of the rotating shaft is...

AI Technical Summary

Problems solved by technology

[0002] At present, finance teachers often draw various graphics on the blackboard during the lecture process. They need to draw multiple parallel, vertical lines, oblique lines, curves, etc. At present, there is no special tool, the error is large, the speed is slow, and it is time-consuming and laborious. , in order to solve this problem, people have done many kinds of efforts, as the Chinese patent CN201020276409.3 discloses a technology named "blackboard angle liner", which introduces a blackboard angle liner, its structure includes Angle plate and line drawing ruler, the surface of the angle plate is provided with angle lines, the center of the angle plate with an I-shaped cross section is provided with a relatively rotatable rotating shaft, the middle part of the rotating shaft is fixedly connected with one end of the line drawing ruler, and the rotating shaft The top is connected with one end of the U-shaped handle, and the other end of the U-shaped handle is fixedly connected with the line ruler

This technology can conveniently draw lines at any angle on the blackboard. The disadvantage is that the function is single. Teachers need to prepare a variety of rulers in the teaching process to meet the teaching needs. It has become an urgent need to solve this problem.

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