Multifunctional rules, including rotating arm design, polygon, circle, design and help the blind.

摘要

This useful model refers to a multi-functional rule/squadron with rotating arms to draw polygons, circles, planar maps and intrusion assistance maps (100), allowing circles, circular lines, geometric shapes, symbols and patterns, even in users. Performance of visual disability. Because he broke the rotation of the broken arm.This rule is designed to obtain various forms and can be drawn relatively easily later. Therefore, because its rotating and movable arm (2) has a hole for guiding the path, this rule includes a central body (1) S. (2) and (3) Two arm bendsIn addition, it includes a removable conveyor (4).Removable parts (5). This useful model is portable and can hide arms (2) and (3), allowing it to occupy the same space as standard rectangular rules.