Mitutoyo 293-349-30 Electronic Outside Micrometer 1 in

Product Description

The MITUTOYO 293-349-30 is a digital electronic outside micrometer designed for high-precision external dimensional measurement in professional machining, metrology, and inspection environments. It measures up to 1 inch with a resolution of 0.0001 inches and an accuracy of 0.0001 inches, making it suitable for tight-tolerance work. The measuring faces are solid carbide, which resists wear during repeated use on hardened or abrasive workpieces. An IP65 ingress protection rating means the instrument is sealed against dust and low-pressure water jets, keeping it functional in typical shop floor conditions. Licensed metrology technicians, machinists, and quality control inspectors are the primary users of this instrument.

This micrometer is used in precision manufacturing, tool and die, quality assurance labs, and general machining shops where accurate outside diameter or thickness measurements are required. The ratchet stop thimble provides consistent measuring force across repeated measurements, which reduces operator-to-operator variation. One SR44 battery is included. The unit ships with a plastic case for storage and transport. A Certificate of Inspection is included, which is a common requirement for shop calibration records and ISO-compliant quality systems.

Key Features

• 0.0001 inch resolution and 0.0001 inch accuracy for high-precision measurement
• Solid carbide measuring faces resist wear on hardened workpieces
• IP65 rating provides protection against dust and water spray in shop environments
• Ratchet stop thimble delivers repeatable, consistent measuring force
• Includes Certificate of Inspection for calibration documentation requirements
• Ships with plastic storage and transport case

Compatibility

Designed as a standard outside micrometer for external measurement applications up to 1 inch. Compatible with standard SR44 replacement batteries available through electronics and instrumentation suppliers.

Installation Notes

This instrument requires no installation. Prior to use, zero the micrometer per the manufacturer procedure and verify against a known standard if calibration documentation is required. Avoid dropping or impacting the measuring faces, as this can affect accuracy and void the Certificate of Inspection. Battery replacement requires a small flathead screwdriver or coin; power down the display before replacing the SR44 cell.