Spi 14-323-0 Mechanical Micrometer 6 Mm Ratchet Stop

Product Description

The SPI 14-323-0 is a mechanical inside micrometer designed for precise internal bore and hole measurements. It features a ratchet stop thimble for consistent, repeatable gauging pressure and a solid carbide measuring face for long-term wear resistance. The instrument delivers a graduation of 0.001 inches and an accuracy of 0.002 mm, making it suitable for close-tolerance work across machining, inspection, and maintenance applications. Calibrated technicians and machinists rely on this type of instrument for verifying bore dimensions where digital tools are not preferred or permitted by procedure. The unit weighs 1 pound.

This micrometer is suited for internal measurement tasks in manufacturing, tool and die, and precision maintenance environments. With a gage depth of 50 mm and a setting ring diameter of 8 mm supporting 3-point contact geometry, it is well matched to bore inspection tasks requiring stable, repeatable readings. It is well suited to shops and field measurement setups where mechanical instruments are standard practice.

Key Features

• Ratchet stop thimble ensures consistent measuring pressure for repeatable results
• Solid carbide measuring face resists wear during frequent use
• 0.001-inch graduation supports fine resolution for close-tolerance inspection
• 0.002 mm accuracy meets demands of precision machining and QC workflows
• 3-point contact geometry provides stable seating inside bores
• 50 mm gage depth accommodates a range of internal measurement applications

Compatibility

Designed as a direct-use mechanical inside micrometer suitable for internal bore measurement applications requiring 6 mm range capacity and 3-point contact gauging.

Installation Notes

Mechanical micrometers are calibrated instruments and should be handled and stored according to standard metrology practices. Before use, verify zero calibration against a known reference standard. Avoid dropping or subjecting the instrument to impact, which can affect calibration. Cleaning the measuring faces before each use with a lint-free cloth helps maintain accuracy.