30cm Angle of the parallel ruler, Specialized drawing instrument that is easy to operate

Name: 30cm Angle of the parallel ruler 1) Color:Green 2) Size:30cm 3)Material:Plastic

Name: 30cm Angle of the parallel ruler1) Color:Green2) Size:30cm3)Material:Plastic

Photos:

1. Protractor Align the center of protractor scale with the point of angle to be measured, and at the same time coincide the scale mark with the baseline, then angels will be mapped.

2. Pen and Arc Put a pen in a hole of a ruler and the other pen in another hole of the same ruler, hold one pen as the circle center and rotate the other pen in the ruler 360 degrees around the center point, then we can get a circle on paper. Different distance between the pens or different rulers will provide various circles or arc.

3. Horizontal Parallel Line Drawing Draw a horizontal line with a ruler. A distance line between parallel lines can be drawn by moving the ruler vertically, with the distance indicated on the counter window.

4. Vertical Parallel Line Drawing Insert a pen in the ruler hole and vertically move the ruler with the pen, then we have vertical parallel lines; length will be indicated by the scale mark in the counter window.

5. Function of vertical parallel line drawing can facilitate to draw graphics and help develop thinking.

30cm Angle of the parallel ruler, Specialized drawing instrument that is easy to operate