Spi MS170309050 Electronic Outside Micrometer 2 in IP54

Product Description

The SPI MS170309050 is an electronic outside micrometer designed for high-precision linear measurement in shop, field, and inspection environments. It measures from 0 to 2 inches with a resolution of 0.000050 inches and an accuracy of 0.000200 inches, making it suitable for close-tolerance work in machining, fabrication, and mechanical trades. The measuring faces are carbide-tipped for extended wear resistance. A friction thimble provides consistent measuring force to reduce operator-induced error. The unit carries an IP54 rating, offering protection against dust ingress and splash exposure in typical shop conditions.

This micrometer is suited for machinists, toolmakers, quality-control technicians, and mechanical contractors who require traceable dimensional verification. It supports both absolute and incremental measuring modes, allowing flexible use across setup, in-process, and final inspection tasks. The unit ships calibrated with a NIST traceability certification included, meeting common quality-system documentation requirements without additional calibration steps at incoming inspection.

Key Features

• Electronic digital readout with 0.000050-inch resolution and 0.000200-inch accuracy
• Carbide-tipped measuring faces for durability and wear resistance
• IP54-rated for dust and splash protection in shop environments
• Supports absolute and incremental measuring modes
• Friction thimble for repeatable, consistent measuring force
• Ships calibrated with NIST traceability certification and LR44 battery included

Compatibility

Designed for standard outside-diameter and flat-surface measurement applications up to 2 inches, compatible with typical quality-system workflows requiring NIST-traceable instrumentation.

Installation Notes

Installed and used by machinists, metrologists, and mechanical tradespeople requiring traceable dimensional measurement. Store the micrometer with the spindle backed off from the anvil to prevent spring fatigue and face damage. Clean measuring faces with a lint-free cloth before use; avoid contact with abrasives or solvents that may degrade the carbide tips. Replace the LR44 battery when the low-battery indicator activates to maintain measurement accuracy.