Spi MS170307005 Electronic Outside Micrometer 7in IP54

Product Description

The SPI MS170307005 is an electronic outside micrometer designed for high-precision external dimensional measurement in machine shop, toolroom, and quality-control environments. It measures up to 7 inches with a resolution of 0.000050 inches and an accuracy of 0.000200 inches, making it well-suited for close-tolerance inspection work. The carbide-tipped measuring face resists wear on hardened or abrasive workpiece surfaces. An IP54 dust- and splash-resistant rating protects the electronics during typical shop-floor use. A friction thimble provides consistent, repeatable seating force to eliminate operator-induced measurement error. Absolute and incremental measuring modes add flexibility for comparative gauging tasks. A NIST traceability certification is included, supporting quality system documentation requirements.

The MS170307005 is used in precision machining and manufacturing environments where external diameter, thickness, or step measurements must be verified to sub-thousandth-inch tolerances. The 3.75-inch throat depth allows access to workpieces with larger cross-sections. Typical users include machinists, quality technicians, and toolroom personnel performing first-article inspection, in-process gauging, or incoming material verification. The instrument ships with battery included, ready for immediate use on the bench or at the machine.

Key Features

• 0.000050-inch resolution for sub-thousandth-inch measurement readout
• 0.000200-inch accuracy with NIST traceability certification included
• Carbide-tipped measuring face for extended wear life on hardened surfaces
• IP54 rating provides protection against dust ingress and splash in shop environments
• Friction thimble ensures consistent measuring force and repeatable results
• Absolute and incremental measuring modes supported
• LR44 battery included; rotating spindle design

Compatibility

Designed as a general-purpose electronic outside micrometer for bench, toolroom, and shop-floor dimensional inspection applications requiring measurement up to 7 inches.

Installation Notes

Calibrated instruments should be handled and stored according to the manufacturer guidelines to maintain traceability. Allow the micrometer and workpiece to thermally stabilize to the same ambient temperature before taking critical measurements, as thermal expansion can affect readings at tight tolerances. Verify the zero setting against the supplied standard before use. Battery replacement uses an LR44 cell; always power the unit off before opening the battery compartment.