I rather marveled at the foldout probe on the Datron Neo and have been working at designing one up but recently it occurred to me as a temporary measure I could use a high quality Picatinny (Rifle Scope) rail and quick release scope mount ring mounted to my Spindle head bracket that I could quickly and easily install and remove with repeatable accuracy without always putting it in and out of the spindle. After a bit of trial and error I have a really solid repeatable level of accuracy, ~.001, that I can pop in and out very quickly. I stress again a good quality rail that is precision machined and matching rings allows you to change scopes and sites with high degrees of accuracy to make a minimal amount of scope/sight re-cal.
I am curious about what is the best way to then program and store the offset between the center of the probe and the spindle center in Mach3. There is a ton of info about the offsets for a number of things and I'm a little confused at to which offset and tool I should assign this to as a matter of best practice.