Spline Gages v2

Go/No-Go and variable indicating gages for involute, helical, straight-sided, and serration splines — internal and external. Every spline gage is engineered from your data, cut on CNC gear machines, hardened to 62–63 HRC, hand-lapped, and certified in our ISO/IEC 17025 accredited lab. Plug, ring, indicating, and taper master gages from 3/16" to 20" (5–500 mm), up to 550 teeth and 45° helix. Quality you can trust since 1989.