Make: Technology on Your Time Volume 23

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1+2+3 Hypsometer

By Cy Tymony

Want to know the height of a person or building? Using simple trigonometric principles, you can closely estimate the height of objects with an easy-to-make hypsometer (hyps means height in Greek).

1. Make it.

Tape the straw along the top of the card. Punch a small hole in the right side of the card, 10cm from the bottom. Straighten the paper ...

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