Starrett 70945 Test Indicator Ball Contact Point Steel

Product Description

The STARRETT 70945 is a steel ball contact point designed for use with dial test indicators in precision measurement applications. The ball tip measures 0.3543 inches (9.00 mm) in diameter, and the contact point length is 5/32 inches (3.97 mm). The tip diameter is 0.0350 inches. This replacement contact point is used by machinists, toolmakers, metrologists, and calibration technicians who require accurate surface contact when checking runout, alignment, or part geometry with a dial test indicator.

This contact point is suited for precision measurement work in machine shops, manufacturing facilities, and metrology labs. It is a direct replacement or spare for setups using the Starrett 711 Series Last Word Dial Test Indicators. Its ball-style tip geometry allows consistent contact on curved or irregular surfaces, making it appropriate for bore alignment checks, shaft runout measurement, and surface deviation readings.

Key Features

• Ball diameter of 0.3543 inches (9.00 mm) for consistent surface contact
• Contact point length of 5/32 inches (3.97 mm)
• Tip diameter of 0.0350 inches for fine-point engagement
• Steel construction for durability in shop environments
• Designed for use with Starrett 711 Series Last Word Dial Test Indicators

Compatibility

Designed for use with Starrett 711 Series Last Word Dial Test Indicators as stated by the manufacturer.

Installation Notes

Contact point replacement is performed by metrology or machining professionals using the appropriate wrench or tool for the indicator thread. Power down or de-energize any automated equipment before servicing indicators mounted in active fixtures. Avoid overtightening the contact point, as this may damage the indicator spindle thread. Confirm thread compatibility with the indicator before installation.