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Compasses capable of drawing double circles

A technology of compasses and gauge rods, applied in the field of compasses that can draw double circles, to achieve the effect of structural science

Inactive Publication Date: 2016-05-11
GUCHENG COUNTY THIRD MIDDLE SCHOOL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The compasses used now have two outriggers, namely the fixed needle and the drawing needle. When in use, the center is fixed by the fixed needle, and the drawing needle is used to draw a circular figure. This traditional compasses can only make one circular figure at a time. , and only one lead core can be used

Method used

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  • Compasses capable of drawing double circles

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Effect test

Embodiment Construction

[0008] attached figure 1 Shown: compasses respectively has a drawing needle gauge rod 2 on both sides of fixed needle gauge rod 1.

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Abstract

The invention provides a pair of compasses capable of drawing double circles. The compasses are provided with one drawing needle gauge bar at each side of a fixed needle gauge bar. In use, two circular graphs of different sizes can be quickly drawn out once, and a pencil lead or a gel pen refill can be selectively used according to needs for drawing. The compasses are scientific in structure, and are especially suitable for being conveniently used during drawing.

Description

technical field [0001] The invention relates to a compasses, in particular to a compasses capable of drawing double circles. Background technique [0002] The compasses used now have two outriggers, namely the fixed needle and the drawing needle. When in use, the center is fixed by the fixed needle, and the drawing needle is used to draw a circular figure. This traditional compasses can only make one circular figure at a time. , and only one lead core can be used. Contents of the invention [0003] The invention provides a compass capable of drawing double circles, which can draw two circle figures at one time, and can choose to use different stroke figures. [0004] The present invention includes a needle-fixing gauge rod of a compass, and the adopted technical solution is that: said compasses has a pin-setting gauge rod on both sides of the needle-fixing gauge rod. [0005] The beneficial effect of the present invention is reflected in: when in use, two circular figure...

Claims

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Application Information

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IPC IPC(8): B43L9/02
Inventor 肖嘉丽
Owner GUCHENG COUNTY THIRD MIDDLE SCHOOL
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