Spi CMS160809172 Mechanical Outside Micrometer 6 in

Product Description

The SPI CMS160809172 is a mechanical outside micrometer designed for high-precision external measurement in machining, toolmaking, and quality-control applications. It covers a measurement range of 0 to 6 inches with a graduation of 0.0001 inches and an accuracy of 0.0002 inches. The micrometer features a ratchet stop thimble for consistent measuring pressure, a rotating spindle measuring 0.25 inches in diameter, and solid carbide measuring faces for long-term wear resistance. A built-in digital counter aids reading, and the instrument ships calibrated with NIST traceability certification included. Machinists, metrologists, and precision tool technicians are the primary users of this instrument.

This outside micrometer is suited for precision dimensional inspection in manufacturing environments, machine shops, and quality assurance departments. It is appropriate for measuring shafts, pins, stock, and other external features where tolerances demand 0.0001-inch resolution. The instrument arrives calibrated and ready for use in ISO- or NIST-referenced inspection workflows. The included case and Short Form Certificate of Calibration make it a practical choice for bench or field metrology applications.

Key Features

• 0 to 6 inch measurement range with 0.0001 inch graduation
• Accuracy of 0.0002 inches for reliable precision measurement
• Ratchet stop thimble ensures consistent, repeatable measuring pressure
• Solid carbide measuring faces resist wear during frequent use
• Digital counter display assists direct reading and reduces misreads
• Calibrated with NIST traceability certification, Short Form Certificate, and case included
• Hammertone and baked enamel coating provides durable corrosion-resistant finish

Compatibility

Designed as a general-purpose mechanical outside micrometer for external dimensional measurement applications requiring 0.0001 inch resolution in standard inch-unit metrology workflows.

Installation Notes

This instrument is intended for use by qualified machinists, quality technicians, or metrologists familiar with precision measurement tools. Before use, verify the micrometer is zeroed or calibrated to a known standard in accordance with your shop or lab calibration schedule. Store in the included case when not in use to protect the measuring faces and spindle. Do not apply excessive force to the thimble; use the ratchet stop to maintain consistent measuring pressure.