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Multi-purpose vision protection ruler

A technology of static ruler and dynamic ruler, applied in the direction of ruler, mechanical device, printing, etc., to achieve the effect of improving learning and work efficiency, low cost and simple structure

Inactive Publication Date: 2011-04-06
施江平
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Now there is no ruler suitable for students and civil servants (such as accountants) who are easy to use and protect eyesight

Method used

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Experimental program
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Effect test

Embodiment Construction

[0013] Static ruler 1 is fixed on the book with commercially available iron clips, just can use. The lower part of static ruler 1 is flange 4, and its function is to make it close to the book; the purpose of two bosses 3 on one surface of static ruler 1 is: when fixing static ruler 1 with commercially available iron clips, it plays a positioning role. The role of iron clips. The moving ruler 2 slides back and forth on the static ruler 1 through a pair of dovetail grooves, so that the linear dimensions in the horizontal and vertical directions can be measured simultaneously.

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PUM

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Abstract

The invention provides a multi-purpose vision protection ruler which is convenient for students and office stuff, and can protect vision and reduce eye fatigue. The ruler consists of a fixed ruler 1 and a movable ruler 2. The multi-purpose vision protection ruler is characterized in that the fixed ruler 1 is combined with the movable ruler 2 by a pair of dovetail grooves; the fixed ruler 1 is in a stepped shape, wherein one step surface is provided with measuring scales; and the movable ruler 2 is also provided with measuring scales.

Description

【Technical field】 [0001] The invention belongs to the category of cultural and educational supplies, in particular to a multi-purpose video ruler. 【Background technique】 [0002] At present, there are many kinds of rulers, and most of them are used for measuring linear dimensions; drawing a single straight line. If you use a ruler to draw more than two parallel lines, you need to use other auxiliary rulers. More do not have the ruler that is suitable for student and be engaged in clerical personnel (as accountant) to use conveniently now, protect eyesight again. 【Content of invention】 [0003] The purpose of the present invention is then aimed at the above-mentioned problems, and a kind of student, civilian staff has been designed not only easy to use, and plays protection eyesight, reduces the multi-purpose visual protection ruler of eyestrain. [0004] Technical solution of the present invention: [0005] A multi-purpose visual protection ruler composed of a static ru...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B3/20G01B5/00B43L7/10
Inventor 施江平
Owner 施江平
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