Starrett 71838 Micrometer Rod 449 Series Depth Gages

Product Description

The STARRETT 71838 is a replacement micrometer rod designed for use with 449 Series Micrometer Depth Gages. The rod extends the measuring range of the depth gage, allowing technicians and machinists to take accurate depth measurements from 0 to 25mm (0 to 1.0000 inches). Built as a dedicated accessory, it maintains the precision tolerances required for reliable micrometer-grade measurement. This type of rod is a field-replaceable component, making it a practical spare for metrology toolrooms, fabrication shops, and quality control benches where depth gages see regular use.

This rod is intended for use with the Starrett 449 Series Micrometer Depth Gages. It is suited to applications where precise depth measurement is required, including machined bore depths, step heights, and slot measurements. Typical environments include machine shops, manufacturing facilities, and inspection stations. The 0 to 25mm range covers standard shallow-depth measurement tasks common in both light fabrication and precision machining work.

Key Features

• Measuring range of 0 to 25mm (0 to 1.0000 inches)
• Rod-style anvil type for depth gage measurement applications
• Designed as a direct accessory for 449 Series Micrometer Depth Gages
• Field-replaceable component to restore gage function without full unit replacement

Compatibility

Designed for use with Starrett 449 Series Micrometer Depth Gages, as specified by the manufacturer.

Installation Notes

Installation of the micrometer rod should be performed by a qualified metrologist or machinist familiar with depth gage assembly. Before swapping rods, ensure the gage is clean and free of debris at the seating surfaces to avoid measurement error. Follow the tool manufacturer's assembly instructions to confirm the rod is properly seated and locked before taking measurements. Verify calibration after rod replacement before returning the gage to service.