You can compare your model to the data (measurements) here:
http://www.spacemodeling.org/jimz/est2000.htm

There's already a decal scan.

You don't need a scanner to document the parts in your builds. Any critical parts, dimensions, decal sheets can be photographed, close up, with a ruler. That's good data that's better than nothing. Post the pics in your vintage build threads.

__________________
-Wolfram v. Kiparski
NAR 28643 - TRA 15520
MTMA Section #606 President