coonn Professional Large Triangular Ruler Multifunction Multi-Size Angle Protractor Math Geometry Drawing Measuring Tool School Office

Size: As the picture show

Applicable Scenario: Teaching

Weight: 01-261g; 02-261g; 03-197.2g; 04-218.3g; 05-173.6g

Product Features: Accurate scale, handle holding, no burrs on edges and corners

Features:

1.Math geometry tool kit are essential tools for architects, engineers, artists, designers, teachers and so on. Appropriate big size to use for geometry drawing and math class, fits for classroom, school or office.

2.Clear large numbers design measurement; easy to read, suitable for blackboard, whiteboard, dry erase board, etc.

3.Plastic material, wear resistance, not easy to deform, and will not scratch your hands.

4.Hollow center design, with detachable handle the teaching ruler is easy to grip.

5.Big size math geometry measuring drawing tool for office and school.

Note:

1.1cm=10mm=0.39inch.

2.Please allow 1-2mm error due to manual measurement and make sure you do not mind before ordering.

3.Please understand that colors may exist chromatic aberration as the different placement of pictures.

Package Include: