INSIZE 4666-16A Thread Depth Gauge M16x2-6H

The INSIZE 4666-16A thread depth gauge checks the depth of a M16x2-6H threaded hole, reading 0 to 64mm with a vernier scale graduated in 0.1mm steps to ±0.1mm accuracy. INSIZE supplies it with matching GO and NO-GO gauges, so the same tool checks that the thread accepts the fastener and measures how deep the tapped hole goes; the GO gauge can be replaced once it wears. Depth is measured from half a thread pitch in, per INSIZE's design, and each gauge comes with a manufacturer inspection certificate. A zero-setting block (code 4668-SETTER) and a gauge removal tool (code 4668-TOOL) are available as separate accessories.