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The MITUTOYO 983504 is a replacement depth micrometer rod designed for use with Mitutoyo 132 and 329 series depth micrometers. This rod extends the measurement range of compatible depth mics to cover 1 to 2 inches, allowing technicians and machinists to reach deeper bores, slots, and stepped features. The rod measures 129.70 millimeters in overall length with a rod diameter of 4.00 millimeters, conforming to standard Mitutoyo interchangeable-rod geometry. It is a direct accessory replacement for field service and shop calibration setups.
This depth rod is suited for precision measurement applications in manufacturing, machining, and inspection environments. It fits the standard interchangeable-rod style depth micrometer design used across the Mitutoyo 132 and 329 product lines. Typical use cases include measuring groove depths, blind hole depths, and shoulder heights where the base instrument requires an extended-range rod. Installation and rod changes are performed by machinists, metrologists, and quality technicians working in shop or lab settings.
Designed for use with Mitutoyo 132 and 329 series depth micrometers as a direct interchangeable replacement rod.
Rod replacement is performed by machinists or metrology technicians familiar with Mitutoyo depth micrometer disassembly procedures. Before changing rods, ensure the instrument is removed from service and the measuring faces are protected from contact damage. Follow the instrument manufacturer's procedure for rod insertion and locking to maintain measurement accuracy and avoid thread damage. Verify calibration after rod changes before returning the instrument to production use.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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