Mitutoyo Setting Ring Bore Gage Calibration Standard

The Mitutoyo Setting Ring Bore Gage Calibration Standard line gives machinists and quality technicians a trusted reference for setting and verifying bore gages, dial bore gauges, and other internal diameter measuring instruments. Setting rings, also called master rings or ring gages, provide a known internal diameter. You use them to zero or calibrate a bore gage before measuring.

Key Features:

• Precision-ground bore that serves as a dependable internal diameter reference
• Made for setting dial bore gages, electronic bore gages, and similar internal measuring tools
• Hardened, wear-resistant construction for long-term dimensional stability
• Backed by Mitutoyo's reputation for metrology and inspection equipment
• Useful in machine shops, inspection rooms, and calibration labs

Setting rings help keep bore measurements repeatable and consistent from shift to shift. Store them clean, dry, and lightly oiled when not in use to protect the bore and preserve accuracy. Choose the variant that matches the bore diameter you measure.