Texas Instruments
Texas Instruments: Real Life Real World Activity Forestry
Forest industry professionals make measurements in their work using tools including the Clinometer and the Biltmore Stick. These tools are based on the concepts of similar triangles and trigonometric ratios in a right triangle. This...
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Foresty Suppliers: Using Forest Densiometers [Pdf]
Explains what a forest densiometer is, its history, and its use as a tool to measure forest overstory density, i.e., the area percentage that a tree canopy covers.
Environmental Education for Kids
Eek!: Wisconsin's Champion Trees
Environmental Education for Kids offers step-by-step procedures to measure trees. Designed for Wisconsin's Champion Trees, these guidelines can be adopted for use in any state or area.