Plastic Ruler：
A school math ruler set typically includes four pieces:

1. A 6-inch (15cm) ruler with both imperial and metric units marked on it. This is the most common type of ruler used in schools for measuring length and distance.2. A protractor, which is used to measure angles. It typically has a semicircular shape with degrees marked along the curved edge.3.2 triangle, which is used to draw straight lines and measure angles. It typically has a right angle and two acute angles, and may also have markings for measuring length.

1)Unit material:plastic ,wood ,metal.

2)Unit size:10CM 15CM 20CM 30CM 50cm 100cm 

3) Certificates for EN71 and ASTM D-4236 standards

4) OEM PACKING

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