To build a wheel you must measure your hub and rim to determine spoke length. The better your measurements, the more accurate the spoke length prediction. Here's a tool to make that easier.
Thanks to Adrian Emilsen I was reminded how helpful a height gauge is. I've got one you should consider—iGaging's precision digital tool.
The IP54 tool is a great choice.
We ship it with a hub stand, a new design (7/2022):
Any QR or thru axle hub will sit on it while you adjust the measuring beam.
To determine spoke length, enter the center to flange distances for your hub in a spoke length program.
Add a height gauge to your workshop!