It would be great to add an option in "Document Settings" -> tab "Units", to set a different unit for tolerances (in 3D), as shown in the picture below.
A lot of watchmaker companies work with millimeter for global dimension and micron for tolerance. It means that 3,000 ±0.005 is written 3.000 ±5 in sketch, MDB or drawing dimensions.
The goal is to display and calculate tolerances in micron or whatever unit set without being linked to the "Length" unit.
Can't find what you're looking for? Ask the community or share your knowledge.