My Brown & Sharpe, also a Validator, originally had Unix operating sys, and MM4.
In spring of 1998, after struggling with Unix, (I hate Unix!), I was able to convince my QA Manager to dump Unix, change to Microsoft Win95, and have LK retrofit this CMM with WinCmes and Dgraf.
The B&S accompanies a LK G90-C. Both are in a “shop floor” environment running 24/7.