Spi 14-143-2 Test Indicator Feeler Co-ax Centering

Product Description

The SPI 14-143-2 is a replacement feeler accessory designed for use with Co-Ax centering indicators. The feeler extends 6 inches (150 mm) in overall length, providing the reach needed to contact a bore or datum surface while the centering indicator is mounted in a spindle. Machinists, tool and die technicians, and precision measurement professionals install this feeler when the original stylus-type contact arm requires replacement or when a specific length is needed for a given setup. It interfaces directly with compatible Co-Ax centering indicator bodies without modification.

This feeler is suited for machine shop environments where Co-Ax centering indicators are used to locate part centers, align fixtures, or set up workholding on mills, lathes, and boring machines. The 6-inch length accommodates setups where standard-length feelers cannot reach the target surface. It is a single-piece accessory sold individually and is appropriate for both production and toolroom applications where repeatable centering accuracy is required.

Key Features

• 6-inch (150 mm) overall length for extended-reach centering setups
• Designed as a direct-fit accessory for Co-Ax centering indicators
• Sold as an individual replacement component
• Lightweight at 1 pound packaged weight, suitable for precision instrument handling

Compatibility

Designed for use with Co-Ax centering indicators. No additional specific model numbers or system families were provided in the product data.

Installation Notes

Installation is performed by machinists or precision measurement technicians. Before replacing the feeler, remove the centering indicator from the machine spindle and secure it in a stable position. Follow the Co-Ax indicator manufacturer instructions for attaching or removing the feeler arm to avoid damage to the indicator body or the feeler contact point. Handle all precision measurement accessories with care to prevent bending or surface damage that would affect accuracy.