So, do you think you have a set of high quality calibrated eyeballs? Can you bisect an angle on sight or put your finger on the exact middle of a circle without measuring?
If so, have we got a challenge for you. ToolCrib.com has posted a simple yet maddening woodworker’s game on their site. In this game, you will do three rounds of ‘eyeball’ measurements… how to make a parallelogram, how to find the center of a circle, how to find the midpoint of a line segment and other tasks. Once you make your selection, the computer will calculate how far off from true you are.
So far, after *ahem* a ‘few’ rounds of play, my best score was 5.5 units… not bad, but not good enough to trust when doing a project installation.
I will give one word of warning… this game is addictive. Set your computer alarm for a few hours from when you start so you don’t continue playing well past your bedtime!