Title:
PROTRACTOR
Document Type and Number:
Japanese Patent JP2016130001
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a protractor capable of drawing a target angle quickly.SOLUTION: There is formed a groove 5 having a wall surface 4 extending precisely along a 90° angle line 2 to a 0° angle line 1. Further formed is an angle display scale 6 gradually reducing from 90° to 0° from the 0° angle line 1 to the angle line 90°.SELECTED DRAWING: Figure 1
Inventors:
KITAMURA SHUICHI
Application Number:
JP2015032274A
Publication Date:
July 21, 2016
Filing Date:
January 13, 2015
Export Citation:
Assignee:
KITAMURA SHUICHI
International Classes:
B43L13/00