List of Materials :
1 Protractor
1 Straw
2 pieces of tape
1 binder clip

Step 1: Attach string

First you put the 15 inch string trough the hole of the protractor . then you tape the back of the protractor where the srting is tied at so that it is held in place.
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More by CeeloUfau: HOW TO MAKE A CEELOSCOPE (Clinometer)
Tags: clinometer
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