I think there is a sort of situation where there is a "SCALE" A/C, which in my minds eye means exactly as stated above. If it is 1:10 every dimension and detail is divided by 10. I also think there is what would be called "TRUE SCALE" or "MASTER SCALE" that is a model or plans that provide for every nut, bolt, rivet, zerk and panel line, these are started with the same detail of size and shape and taken to the third dimension of extream detailing.
Charlie