Mitutoyo 293-347-30 Electronic Outside Micrometer 4 in

Product Description

The MITUTOYO 293-347-30 is a digital outside micrometer built for high-precision linear measurement in professional metrology, machine shop, and quality control environments. It covers a measurement range up to 4 inches (76.20 mm minimum to 4.0000 inches maximum) with a resolution of 0.000050 inches and an accuracy of 0.000100 inches. The solid carbide measuring faces resist wear under repeated use. The satin chrome finish reduces glare under shop lighting. This instrument is installed and operated by machinists, quality technicians, and precision metrology professionals who require reliable, repeatable readings at tight tolerances.

The 293-347-30 is suited for outside diameter and linear dimension checks on machined components, tooling, and raw stock in both production and inspection settings. Its IP65 rating provides protection against dust ingress and low-pressure water jets, making it practical in environments where coolant splash or particulate contamination is a routine concern. The ratchet friction thimble delivers consistent measuring force for repeatable results across multiple operators. It ships with a plastic storage case and one SR44 battery installed.

Key Features

• Resolution of 0.000050 inches for high-precision dimensional inspection
• Accuracy of 0.000100 inches across the full 4-inch range
• Solid carbide measuring faces for extended service life under heavy use
• IP65-rated for dust-tight, splash-resistant operation in shop environments
• Ratchet friction thimble ensures consistent measuring force and repeatable readings
• Satin chrome finish minimizes glare during reading
• Includes plastic case and SR44 battery for immediate use out of box

Compatibility

Designed as an OEM-specification electronic outside micrometer for outside diameter and linear dimensional measurement applications requiring a 0- to 4-inch range.

Installation Notes

Installation and calibration of precision measuring instruments should be performed by a qualified metrology technician or machinist. Before use, zero the micrometer per the manufacturer procedure with the measuring faces clean and fully closed. Store the instrument in its included case when not in use, and keep the faces protected from contact with abrasive surfaces. Periodic verification against a certified gauge block is recommended to confirm calibration status.