Problem solved.

I don't think so!
The SH3D accuracy (0.1 cm visually 0.01 cm on computations) it is more than enough for build something.
Example: When I need to set a bricks wall length, high and thickness and to have the correct (approximately) numbers of needed bricks it is not so simple in metric system wile the bricks are (and it is) made in imperials.
I've encountered this problem especially when I've need to reproduce old buildings.
Also the furniture parts and the furniture it self are made under imperial system. I checked with the roulette and the caliper.
To made a home entirely in an unit system which it is not familiar to me and then change the unit measurement it is not an option.
Not all the objects in the plan are made in imperials.
If I could have both on my eyes I could be more productive.