Use these gauges for measuring the depth of small holes and fabricated articles with grooved or elevated surfaces. Reliable, high accuracy depth measurements in micrometer or gauge style.

0 to 1" indicator with 0.100" per revolution dial; surface hardened, ground and micro lapped; 2 extra points for groove measurements (one 0.175" dia x 1" L and one needle point 1" L); connect rods for 22" length; furnished in shop-hardened case; 4" base