Vermont Gage 161A111-3 Bore Ring Gage Smooth Master X

The Vermont Gage 161A111-3 Bore Ring Gage Smooth Master X is a precision setting ring used to calibrate and verify bore measuring instruments and dimensional inspection equipment. It features a nominal inside diameter of 2.7500 inches, providing a reliable reference standard for quality control, metrology laboratories, and precision manufacturing environments. The master ring is machined from hardened tool steel and precision ground for high-accuracy measurement, ensuring consistent bore gage calibration and internal micrometer verification. Designed as a master ring for calibration and setting, it supports OEM, manufacturing, and calibration use in metrology and quality control applications. Typical environments include calibration laboratories, machine shops, aerospace manufacturing, automotive production, and other industrial quality assurance departments where accurate calibration of bore gages and measuring instruments is essential. Manufactured by Vermont Gage in the USA, with the part number 161A111-3, this Smooth Master Bore Ring Gage is a key reference for setting rings and calibration references.