Tower Outside Checker

For calibrating outside of all types of calipers, measuring tools, and setting zero of outside micrometers. All models are with a step of 25mm.

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.

Certificate of calibration issued by accredited calibration Laboratory, JCC (TAF 0193 ISO/IEC 17025). Inspection reading: 0.1um

Model No.	Measuring Range	Step	Size Tolerance	Parallelism	Flatness
TOC-X150	25-150mm	25mm	±3um	≤ 1.5um	1um
TOC-X200	25-200mm		±4um	≤ 2.0um
TOC-X300	25-300mm		±5um	≤ 2.5um