Starrett 65861 Depth Gage Base Extension 7 in Stainless

Product Description

The STARRETT 65861 is a depth gage base extension designed to increase the reach of compatible Starrett dial depth gages. Machined from stainless steel, the extension measures 7 inches in length and attaches to the base of the gage to allow measurement in deeper bores, slots, or recessed surfaces where the standard base would not reach. At 0.5 pounds, it is lightweight enough to handle without affecting gage stability. This component is used by machinists, pipefitters, and precision measurement technicians working in fabrication, maintenance, and inspection environments.

This base extension is suited for applications requiring precise depth readings in locations beyond the range of a standard gage base. Typical use cases include measuring hole depth in machined parts, step depths on fixtures, and slot depths in fabricated assemblies. It is compatible with Starrett Dial Depth Gage Model Number 450-12, Starrett Dial Depth Gage Model Number 450-6, and Starrett Dial Depth Gage Model Number 450M-300.

Key Features

• 7 inches in length extends depth gage reach into deep bores and recessed surfaces
• Stainless steel construction resists corrosion and wear in shop environments
• Lightweight at 0.5 pounds for easy single-hand handling
• Direct compatibility with multiple Starrett 450-series dial depth gages
• Single-piece quantity suitable for individual tool servicing or replacement

Compatibility

Compatible with Starrett Dial Depth Gage Model Number 450-12, Starrett Dial Depth Gage Model Number 450-6, and Starrett Dial Depth Gage Model Number 450M-300.

Installation Notes

Installation is performed by the technician or machinist using the gage. Power-down procedures do not apply to this mechanical accessory. Ensure the mating surfaces of the extension and gage base are clean and free of debris before attaching to maintain measurement accuracy. Follow the gage manufacturer instructions for securing the extension to prevent movement during use.