What you would do in this case is route your scales to the encoder input of Mach3. THis will give you a DISPLAY of the scales positions.
Then create a script to write the encoder DROs EncX, EnxY,EnZ to a Pointfile . Use a keyboard hotkey to activate the button.
Then move to a position , use the button, move to position ,use the button.
I did this years ago and it worked fine for gathering points data. You can also create functions to make a Measurement frome point to point and return a value.
NOW there is NO standard feature in MAch3 for this. In stock form the best you can do is manual write the point data on paper then create a DXF from that data.
I later created the Probing arrays to do an auto profile of a part to gather all the points and write to file. There is an exterior and interior array. They are in the Mach Tool Box section of this site.
(;-) TP