As a matter of fact I know. When Star Wars came out they produced and technical sketch book. It has the line drawings used to help create the ideas. There of course are no dimensions but if you can use a divider/compass you can get it proportional to the size you want. I am at work right now and cannot think of the name. I think it is SKETCHBOOK DRAWINGS OF STAR WARS. Not 100% sure. I have the 3 original books at home. When I get home later I will get the exact name for you. If you want I could try scanning the drawings in there and sending them to you. The one good thing about the book is that it gives you relative sizes of the vehicles to the size of people/aliens next to it. It is a thin blue book. I actually have not looked at it recently but if you want to scratchbuild, this one is one of the best resources.