Put two V-blocks on there side on a surface plate and height guage
After you put all the absolute values in for the tools and checked clearances tool change is easy

Take tool out and to the height guage ---zero off the tool and then replace -------use the height guage and find out new tool value as incramental
orginal value would be zero and new offsett would be minus the new value like -.01 or plus 0.5

This was the old and fast way of making sure the new tool cut to the same depth as the last one