Premium Valve Seat Run-out Gauges

Check concentricity of valve seats precise to .001in. Use after grinding or cutting seats. Complete tool mounts on seat-grinding pilot. Place probe on seat and rotate entire tool. Jeweled-bearing indicator reads plus or minus .050" with .001" precision. Range 1.00" to 2.50". Available for .375" or .385" top pilots (sold separately).

See how this Valve Seat Run-Out Gauge works by watching the Tech Lab Tuesday Valve Seat Concentricity Video