Starrett 71984 Micrometer Rod 2 to 3 Inches Depth Gage

Product Description

The STARRETT 71984 is a replacement micrometer rod designed for use with 443 and 445 Series Micrometer Depth Gages. It extends the measurement range from 2 to 3 inches, allowing technicians and machinists to take accurate depth readings in that interval. The rod measures 5/32 inches (3.20 mm) in diameter and is engineered to the dimensional tolerances required for precise micrometer work. This type of accessory rod is a standard consumable in precision measurement tooling and is replaced when wear or damage compromises measurement accuracy. Machinists, tool-and-die workers, and quality control technicians are the primary users.

This rod is intended for bench and shop environments where depth measurement is performed on machined parts, bores, slots, and steps. It fits directly into the Starrett 443 and 445 Series Micrometer Depth Gage frames, enabling measurement in the 2 to 3 inch range. It is sold individually and is a direct OEM-style accessory for maintaining or expanding the measurement capability of a compatible depth gage set.

Key Features

• Measurement range: 2 to 3 inches when used with a compatible 443 or 445 Series depth gage
• Rod diameter of 5/32 inches (3.20 mm) for proper fit in the gage frame
• Designed as a dedicated accessory rod, not a standalone measuring instrument
• Sold as a single unit with a minimum order quantity of 1
• Lightweight at 0.005 pounds for easy handling and storage

Compatibility

Designed for use with STARRETT 443 Series and 445 Series Micrometer Depth Gages. This rod covers the 2 to 3 inch measurement interval within those gage systems.

Installation Notes

Installation of this rod is performed by machinists or metrologists familiar with micrometer depth gage assemblies. Before swapping rods, ensure the gage is clean and free of chips or debris that could affect seating. Follow the manufacturer's instructions for rod insertion and locking to maintain measurement accuracy. Do not force the rod into the frame, as this can damage the seating surfaces and introduce measurement error.