So if my truck is 200" long, I would divide by 10 to give me 20" on screen, which would be1/10 scale, I get this part! It's the 1000% part I don't get, or is it that 1000% equals multiplying by 10 to get it full size? I think I get the whole ppi thing , at 1/10 I would design at 720ppi, for a...