07-04-2010, 09:04 AM
when building from photos , if you take the photo use a yard stick set up against the object painted white , red , white at the ft mark gives a known dimension for measuning of object in photo, or measure somthing (door window) and note it for referance, if photo is not one you took then look for standard dimensions like a brick or a cinder block a car / truck rim stop sign or any thing that has a common size to it.
jim
jim