Cylinder Depth Checker

For calibrating depth error of all types of caliper depth rods, outside accuracy inspection and zero setting of depth micrometers, depth calipers, dial depth gauges.

Made of heat treated hardened tool steel, hardness: HRC58-62.

Checker body and base are chromed polished, wear resistant, and rust resistant to ensure measuring accuracy and durability.

Checker face dimension tolerance:±0.003mm parallelism and flatness max error: 0.002mm

The measuring gauge does not need to be twisted at all, and only a simple stacking combination can ensure the accuracy requirements of the measurement specifications

The surface of measuring gauge must be kept clean and free of defects, when stacking gauge, use two or more pins to insert in the positioning holes to fix it.

Inspection reading: 0.1um