G1-40 Universal Concentricity Gages is comprised of two main components for assembly. #1) selection of main rollers, #2) select an indicator(s) and/or other accessories. Standard Black Gages are guaranteed to be better than ≤ 4µm (.00016") accuracy with calibration certification directly traceable to N.I.S.T.
#G1-40 Standard Concentricity Gage Model