Spi MS1536-03 Outside Micrometer 10 Inch Nist Calibrated

Product Description

The SPI MS1536-03 is a mechanical outside micrometer engineered for high-precision linear measurement in professional metrology, machining, and quality-control applications. It covers a measurement range up to 10 inches with a graduation of 0.0001 inches and an accuracy of 0.0003 inches. The instrument features a ratchet stop thimble for consistent, repeatable gauging force and a rotating spindle with a solid carbide measuring face for long-term wear resistance. The unit ships calibrated and includes a Short Form Certificate of Calibration with NIST traceability, making it ready for use in environments that require documented measurement standards.

This micrometer is suited for shop-floor and inspection-room use in metalworking, fabrication, and precision manufacturing environments. Machinists, quality technicians, and metrology professionals use it to measure shaft diameters, bar stock, and machined components at the larger end of the outside-micrometer range. The included case and calibration documentation make it appropriate for both bench use and field service kits where traceability records are required by a quality management system.

Key Features

• 10-inch maximum measurement range with 0.0001-inch graduation for fine resolution
• Accuracy of 0.0003 inches across the measurement range
• Ratchet stop thimble delivers consistent measuring force to reduce operator variation
• Solid carbide measuring faces resist wear on hardened and abrasive workpieces
• Rotating spindle design for smooth operation and accurate seating on the workpiece
• Ships calibrated with NIST traceability certification and Short Form Certificate of Calibration included

Compatibility

Designed as a standalone outside micrometer for general-purpose precision measurement of external dimensions up to 10 inches; compatible with standard micrometer standards and setting rods used during periodic re-calibration.

Installation Notes

Outside micrometers of this range should be handled and stored in the supplied case to prevent thermal distortion and physical damage to the measuring faces. Before use, verify zero calibration against the included standards and document any offset per your quality system procedures. Cleaning the anvil and spindle faces with a lint-free cloth before each measurement reduces debris-related error. Calibration should be checked periodically by a qualified metrology technician in accordance with your facility quality plan.