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1. (WO2018145613) CURVE DRAWING AND MEASUREMENT TOOL

Pub. No.:    WO/2018/145613    International Application No.:    PCT/CN2018/075277
Publication Date: Fri Aug 17 01:59:59 CEST 2018 International Filing Date: Tue Feb 06 00:59:59 CET 2018
IPC: B43L 11/04
B43L 11/00
B43L 9/00
B43L 13/00
Applicants: MAN, Hongliu
满洪流
WAN, Hua
万华
Inventors: MAN, Hongliu
满洪流
Title: CURVE DRAWING AND MEASUREMENT TOOL
Abstract:
A curve drawing and measurement tool are provided. On the bases of the basic principle of the parabolic five-point drawing method, elasticity of a stainless steel scale (18) made of a strip-shaped ultra-thin stainless steel sheet is used to make the stainless steel scale (18) smoothly bend to be a desired parabolic shape and then to draw a parabolic pattern along the outside of the stainless steel scale (18). With this tool, a parabola, a hyperbola, an ellipse, a circle, and other curves can be drawn quickly and easily, and the length of the curve can be measured. The tool also has traditional functions of a protractor and a ruler, and can be used to draw any geometry.