Mitutoyo 129-132CAL Depth Micrometer 6 in 6 Rods Nist

Product Description

The MITUTOYO 129-132CAL is a mechanical depth micrometer designed for precise depth measurement in machining, toolmaking, and metrology applications. It covers a full 6-inch measurement range using six interchangeable rotating rods with a 4 mm rod diameter. Resolution is 0.001 inches, and the ratchet stop thimble delivers consistent, repeatable seating force to eliminate operator-to-operator variation. The 4-inch base provides stable, flat contact across workpiece surfaces, and the measuring faces are hardened steel for long service life. A NIST-traceable calibration certificate is included, making this tool ready for use in environments that require documented measurement traceability.

This depth micrometer is used in precision manufacturing, inspection, and quality control settings. Typical applications include measuring the depth of bores, slots, counterbores, and shoulders on machined parts. The six-rod set allows the technician to cover the full 6-inch range in 1-inch increments without a separate extension set. It is well suited to machine shops, tool rooms, and inspection departments where NIST-certified instruments are required by internal quality standards or customer specifications.

Key Features

• 6-inch maximum measurement range with six interchangeable rotating rods
• 0.001-inch graduation for high-resolution depth readings
• Ratchet stop thimble ensures consistent measuring force
• 4-inch base length with 0.000080-inch flatness tolerance for stable contact
• Hardened steel measuring faces resist wear in production environments
• NIST-traceable calibration certificate included; ready for documented QC use
• Comes in a plastic carrying case for storage and transport

Compatibility

Designed as a standard mechanical depth micrometer for general precision measurement use; compatible with any application requiring a 0 to 6-inch depth range with 0.001-inch resolution and NIST-certified traceability.

Installation Notes

Depth micrometers are set up and used by machinists, metrologists, and quality technicians — no installation in the traditional sense is required. Before use, verify the instrument zeroes correctly with all rods seated and the base flat on a reference surface. Store the tool in the provided plastic case when not in use, and keep it away from heat sources and cutting fluids that can affect calibration. If the instrument is dropped or damaged, recalibrate before returning it to service.