G.A.L. Gage Co. Cat # 7 W.T.P.S. Gauge with Calibration Block GAL-7

Measure Undercut 0.010 Deep

Undercut shall be no more than 0.010 in. (0.25 mm) deep when the
weld is transverse to the primary stress in the part that is undercut.

From G.A.L. Gage Company, the W.T.P.S. Gauge CAT-7 is precision made from stainless steel all markings and dimensions are laser engraved for ease and clarity when reading. Gauge set comes with a precision ground calibration block as shown above; each block has been surface ground to 0.0005 tolerance for exceptional accuracy.