This is a simple and inexpensive tool made from laser cut acrylic to answer the age old will this tire/wheel size fit my frame. It’s also useful for framebuilders as a sanity check mid build especially when combined with the chainring gauge.

Comes with a variety of sizes (23,34,38,42,48,54) and slots in the tool to set those at 26”, 650b, and 700c.

The hook is designed to go over an anvil dummy axle, but you can you an old axle with some tape or whatever to shim it to 12.7mm/1/2” diameter.(Also works great with a 12mm thru axle)

UPDATED to V2.1:

Added 61mm tire size

Added a flexure to the tires. keeps them attached without stress

Added holes to store the other tires on the tool

Now made from recycled acrylic! http://www.greencastus.com/

New option for 3d printed dummy axle.