Mitutoyo 147-352 Mechanical Hub Micrometer 1 to 2 in

Product Description

The MITUTOYO 147-352 is a mechanical hub micrometer designed for precise outside-diameter measurement of threaded fasteners, shafts, and cylindrical workpieces. It covers a measurement range of 1 to 2 inches with a graduation of 0.001 inches and an accuracy of 0.0001 inches. Both the anvil and spindle are carbide-tipped, providing resistance to wear during repeated contact with hardened or abrasive workpiece surfaces. The spindle diameter is 6.35 mm. This tool is intended for use by machinists, tool and die workers, quality control inspectors, and maintenance technicians who require reliable dimensional verification in shop or field environments.

The 147-352 is suited for precision measurement applications in manufacturing, maintenance, and inspection settings. It is commonly used when verifying outside diameters of hubs, flanges, shafts, and similar cylindrical components in the 1 to 2 inch measurement range. The mechanical thimble design requires no battery or electronics, making it dependable in environments where electronic instruments may be impractical.

Key Features

• Measurement range of 1 to 2 inches for mid-range outside diameter work
• 0.001 inch graduation for clear, readable incremental measurement
• 0.0001 inch accuracy for high-precision dimensional verification
• Carbide anvil and spindle for extended wear resistance against hardened surfaces
• 6.35 mm spindle diameter for consistent contact area on cylindrical workpieces
• Fully mechanical operation with no battery dependency

Compatibility

Designed as an OEM-specification mechanical hub micrometer suitable for general outside-diameter measurement applications in the 1 to 2 inch range.

Installation Notes

This instrument is a handheld precision measuring tool and does not require installation. Prior to use, clean the anvil and spindle faces and verify zero calibration against a known standard. Store in the provided case away from temperature extremes and humidity to maintain calibration accuracy. Calibration should be performed per the applicable metrology standards used in your facility.