This handy shop aid is ideal for sizing spokes, ball bearings and crank cotters.
- Has both metric and fractional spoke length markings
- For Spokes: Hang the head of the spoke in the oblong hole and read its length on the scale
- For Crank Cotters and Ball Bearings: Works just like a gauge for drill bits
- Anodized aluminum with embossed markings to allow easy reading and long life