Spi 10-730-0 Inside Micrometer Set 0.8-1.6 in

Product Description

The SPI 10-730-0 is a mechanical inside micrometer set designed for precise internal bore and diameter measurement. It covers a measurement range of 0.8000 to 1.6000 inches and achieves an accuracy of 0.0002 inches. The set includes a ratchet stop thimble for consistent, repeatable gaging force and solid carbide measuring anvils for long-term wear resistance. Four micrometer heads and one extension rod are included, along with setting rings and spanner wrenches, all stored in a fitted wooden case. Machinists, toolroom technicians, and quality control inspectors use this instrument in precision manufacturing and inspection environments.

This inside micrometer set is suited for measuring internal diameters in bores, cylinders, and similar features across a range of 0.8000 to 1.6000 inches. The maximum extension rod length of 6.0000 inches accommodates deeper bore measurements. With two setting rings at 1.0000 and 1.4000 inches in diameter, the set supports accurate calibration across the working range. It is appropriate for use in job shops, toolrooms, and quality labs where tight-tolerance internal measurement is required.

Key Features

• Measurement range of 0.8000 to 1.6000 inches with 0.0002-inch accuracy
• Solid carbide measuring anvils for extended wear life
• Ratchet stop thimble for consistent, controlled gaging pressure
• Self-aligning and self-centering design for repeatable seating in bores
• One extension rod with maximum extension length of 6.0000 inches
• Includes 2 setting rings, spanner wrenches, and fitted wooden storage case

Compatibility

Designed for use as a precision inside micrometer set suitable for standard bore and internal diameter measurement applications within the 0.8000 to 1.6000 inch range.

Installation Notes

Inside micrometers are used by machinists and quality technicians and do not require power or installation in a mechanical system. Before use, verify calibration against the included setting rings using the provided spanner wrenches. Store the instrument in its wooden case when not in use to protect the carbide anvils and maintain calibration. Do not overtighten the thimble or apply force beyond the ratchet stop mechanism.