Ninja 400 Chain Tension Checker

thingiverse

Dropped and broke my digital calipers checking my chain tension. Decided to make this adjustable checker. I happened to have magnets with a hole in them in my lab but it'll work fine without them. The washer screwed to the bottom of the shaft is optional too if the fit is snug between the parts. Touch the top of the chain to the upper surface of the tool, then pull the chain down and make sure the top of the chain lands within the semi-circle of the lower portion.