DRO BASICS? & Lathe Tool Offsets!! (SINO DRO)

This is what happens when I try to make a DRO install video... no install footage! Instead, in trying to figure out the SINO SDS6's lathe offset, we get into DRO basics. Absolute, Incremental, Sub Datums, Tool Offsets, all that good stuff. The OLD tool holders video: https://youtu.be/ZNWkhxKNHGM