15cm ruler with Compass multi-function circle ruler

Types of rulers

1.”Snake Ruler” is a ruler specially used to draw curves.

2.Triangle ruler is a right-angled triangle or isosceles triangle ruler, which is convenient for drawing parallel or vertical lines.

3.Slide rule: a calculation tool. Soft ruler: often used to measure parts of the human body.

4.Pull rule: used to measure buildings, furniture, etc.

5.Vernier caliper: used to measure relatively small things.

6.Level: The level is a measuring instrument that uses the principle of liquid level to directly display the angular displacement with a level bubble to measure the relative horizontal position, vertical position, and tilt position of the measured surface.