Standard CMM Reference Sphere

The calibration sphere is used to perform calibration of your probe system. Standard sizes are:

1.00" dia (25.4 mm) with 3/8-16 thread mount for surface plate inserts (M10 Optional).
- Recommended for Microstars

0.50" dia (12.7 mm) with M6 thread mount for surface plate inserts.
- Recommended for Microgage

All reference spheres are Class 10 and include Certification of Size.