Hello,
if you need a dimmension of theo "sharp edge" than try following:
In model:
1. sketch an extrude with sharp edges (make dimmensions else you wish) --- complete an extrude
2. make a round feater on sharp edges
3. In drawing show/call dimmensions of thise 2 feateres
RESULT:
TIPs:
It´s better to use more simplier featers rather than 1 complex.