Little Frog 小青蛙 Math Measuring Rulers

Easy to measure angle  that make it convenient to get the angles degree. 

Wide application that useful tools for architects, engineers, artist, designers student, teacher and so on.

Math measuring rulers suitable for primary & secondary school.

Transparent ruler and through it you can read conveniently.

Straight and triangle rulers with inch and metric scales on them.

Portable and durable.

Available 3 types in store.

a.180 Protractor Ruler

b. 360 Protractor Ruler

c. 45 Degree Square Ruler

Type Colour: Transparent Acrylic Clear.

Click here to see more:

https://www.bunkuya.com/collections/math-sets-compasses-protractors