In this Instructable, I will show you how to make a basic clinometer from classroom materials.  A simple version of surveying equipment, a clinometer can be used to find the angle you are looking, for instance from where you are standing to the top of  a tree.  Combined with the distance to the base of the tree (and a little bit of trigonometry), this can be used to calculate the height of the tree.  Click here to see how to use this clinometer to find the height of a tall object.

Step 1: Materials

To make this clinometer, start by gathering the following materials:

- 1 Protractor
- 1 Piece of thin string, fishing wire, or strong thread, approximately 10" long
- 1 Drinking straw
- Weight that can be tied to the string (I used a large binder clip)
- Transparent tape
<p>really helped a lot</p>
Note: tape the string to only one side of the protractor.

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