Quote - Ok, I see now how that works.  There's no option to change the unit scale on any operation physically, but you can do the math in your head, if you know what imaginary scale you're using for scene units.  The value of Wings3D scene units are whatever you want them to be.

I've just checked Wings and the internal unit is indeed the metre and it won't allow you to type distances in any other unit. If you wanted an inch you'd have to type in 0.0254

Sketchup alows you to type in 1" or 25.4mm or 0.0254m, all will be interpreted correctly no matter what unit of measure you have set for your working units.