Mitutoyo 129-116 Mechanical Depth Micrometer 150mm 6 Rod

Product Description

The MITUTOYO 129-116 is a mechanical depth micrometer designed for precise depth measurement in machining, toolmaking, and inspection work. It covers a measurement range of 150 mm using six interchangeable rotating rods, each 4 mm in diameter. The ratchet stop thimble delivers consistent measuring force across readings, reducing operator-to-operator variation. Graduated at 0.01 mm (metric) and 0.001 inch (inch), the tool offers an accuracy of 3 micrometers. The measuring faces are hardened steel, and the base and thimble carry a satin chrome finish that reduces glare under shop lighting. A measuring rod lock secures the selected rod during use.

This depth micrometer is suited for production floor measurement, quality inspection, and toolroom applications in metalworking, mold and die, and precision fabrication environments. The 101.6 mm base length provides a stable reference surface across slots, bores, and counterbores. The six-rod set allows the full 150 mm range without disassembly of the base. Machinists, tool and die makers, and quality technicians working to tight tolerances in both metric and inch environments will find the dual-graduation scale practical for mixed-standard shops.

Key Features

• 150 mm total measurement range via six interchangeable rotating rods
• Ratchet stop thimble ensures consistent measuring force for repeatable readings
• Dual graduation: 0.01 mm metric and 0.001 inch imperial
• Accuracy of 3 micrometers (0.00012 inches)
• Hardened steel measuring faces for long-term wear resistance
• Measuring rod lock to hold rod position during reading or transfer
• Includes fitted plastic case for storage and transport

Compatibility

Designed as a standalone mechanical depth micrometer for general-purpose precision measurement in metric and inch applications. No specific system or machine compatibility is stated by the manufacturer for this SKU.

Installation Notes

This instrument is a handheld measurement tool, not a permanently installed component. Before use, clean the base reference surface and rod tips to remove chips or debris that would affect accuracy. Select and seat the appropriate rod for the target depth range before locking the rod in place. Calibrate or verify zero against a known reference surface before beginning a measurement series, and store the instrument in its fitted case when not in use to protect the measuring faces.