Value Collection 851-4 Test Indicator Feeler

Product Description

The VALUE COLLECTION 851-4 is a replacement feeler accessory designed for use with Co-Ax indicators in precision measurement applications. The feeler is the contact arm that transmits workpiece deflection to the indicator mechanism, enabling accurate centering and runout measurements. At 0.06 pounds, it is a lightweight, single-piece component. This part is typically installed or replaced by machinists, toolroom technicians, and metrology professionals who maintain Co-Ax indicator setups on milling machines, lathes, and other precision machining equipment.

This feeler is suited for shops and field environments where Co-Ax indicators are used for bore centering, spindle alignment, and concentricity checks. It is a direct-fit accessory replacement that restores indicator function when the original feeler is worn, bent, or damaged. It is sold as a single-unit replacement component, making it practical for on-demand maintenance without ordering excess stock.

Key Features

• Direct replacement feeler accessory for Co-Ax indicator systems
• Lightweight construction at 0.06 pounds for minimal added mass on the indicator
• Single-unit packaging suitable for as-needed replacement
• Restores full measurement function to worn or damaged Co-Ax indicator assemblies

Compatibility

Designed for use with Co-Ax indicators as specified by the manufacturer.

Installation Notes

Installation is performed by qualified machinists or metrology technicians. Before replacing the feeler, remove the indicator from any active spindle or fixture to prevent accidental contact with moving machinery. Handle the feeler carefully to avoid bending the contact arm, as deformation will affect measurement accuracy. Refer to the Co-Ax indicator manufacturer documentation for proper attachment procedure and seating confirmation before returning the indicator to service.