![Probe of the Month October 2017](http://cmms.com/cdn/shop/articles/october-2017_900x460_crop_center.jpg?v=1562005536)
Probe of the Month October 2017
Custom Calibration Sphere
This is a custom calibration sphere. It features a 15.0 mm diameter ceramic sphere and stainless steel base. What’s unusual is its relatively short 55.0 mm length, and its ¼-20 UNC thread. The base has a 12.0 mm major diameter and 7.0 minor diameter. The entire assembly weighs 28.73 grams. A traceable laboratory calibration certificate was supplied with the sphere.
Our client is a New England-based aerospace manufacturer. They ordered one.