- Get a pan with a black interior and enough water to cover an inch of the bottom.
- Get a long measuring tape.
- Walk a fair distance from the tree (it doesn’t really matter, but between 1/2 and 3/4 of the tree height is fine).
- Put the pan on the ground and add the water.
Stand back with the pan between you and the tree. Look in the pan and walk backwards or forwards until you see the top of the tree in the center of the reflective water.
- Measure the distance between your toes and the center of the pan (variable b). Measure the distance from the ground to your eyes (variable a). Measure the distance from the tree to the center of the pan (variable y).
- Plug the distances into the following formula: (a/b)×y=x, where x is tree height.
In my case, the pan was 43′ from the tree and 3′ from my toes. My eyes were 5.5′ high, meaning the tree should be about 79′ tall. I’ll report back on the height once it is down and I can measure it directly.
You can also estimate the tree height with a yardstick, as outlined in the following video.