Wheelwright's Traveler measuring tool

cults3d

This tool measures the diameter of a wagon wheel to determine the metal's length that wraps around its outside. You can use it for any circular object needing wrapping measurements. The wheel is designed so one rotation equals 1 foot or 12 inches, though counting rotations might matter more than distance. A mark on the wheel serves as the measurement's starting point; I printed it black to make it easy to mark the end point with chalk. To measure an object, run the wheel around it, counting rotations until you reach the starting point again. Mark the measuring wheel at that spot with chalk. You can use this process to transfer measurements to wrapping material and find its required length. The bolt holding the wheel is 5mm, supported by a build plate for the handle alone. White paint marks the recessed area on the wheel.