- 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
Measuring Range: 25-200mm
Size Tolerance: ±4um
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