Quote Originally Posted by rgsparber View Post
I watched most of the video and still don’t understand the instrument’s purpose. A 30 second overview sure would have helped.
I looked up ballbar tester and while it was mildly (maybe that is way too strong a word) interesting, perhaps if I had anything with anywhere close to the resolution...

At any rate, here is a site with a video that actually explains how the testing works and the video is less than 1/16 the time commitment...

https://www.renishaw.com/en/ballbar-...xplained--6818