The top is spring loaded is will work on manual mill or NC. I usually write my programs for my NC with a home zero position of 1. This will save me a step of touching off and moving up 1.0 and zeroing. That is one the reasons I wanted a 1.0 not a 2.0.
I don't have any diamond tooling but if I do end up with some I'll keep that in mind thanks for the tip I guess I would have done the same thing.