Mitutoyo 146-231 Mechanical Groove Micrometer 0-1 In/.055-1.05 In Range

The Mitutoyo 146-231 is a precision mechanical groove micrometer designed for measuring the width and location of grooves in both inside and outside bores and tubes. Featuring a .25-inch diameter flanged spindle, this specialized measuring tool provides accurate measurements with .001-inch resolution across a versatile range of 0-1 inch for outside diameters and .055-1.05 inches for inside diameters.

Key Features:

• Flanged spindle design enables precise measurement of groove width and location in bores and tubes
• .25-inch diameter flange for access to restricted areas
• Non-rotating spindle ensures consistent, accurate readings
• Two-directional ratchet stop for uniform measuring force and repeatability
• .001-inch graduation for precision measurements
• Dual measurement range: 0-1 inch (OD) and .055-1.05 inches (ID)

This mechanical groove micrometer is ideal for quality control, inspection, and manufacturing applications where precise groove measurements are critical. The non-rotating spindle design prevents scratching of the workpiece while maintaining measurement accuracy. Mitutoyo's proven mechanical design ensures reliable performance in workshop environments.