Clinometer : 6 Steps (with Pictures) - Instructables - 2 views
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Luciano Ferrer on 02 Oct 21"This is a simple tool that uses some basic trigonometry to measure the height of trees. This tool is a 45-45-90 triangle and thus an isosceles triangle. Isosceles triangles have two legs of equal length. By using a 45-45-90 triangle to placed yourself at a distance from a tree trunk, you create an triangle where the distance from the trunk is also the height of the tree. "