A scale of 1/1000 in modeling terms means that 1 inch is equal to 1000 inches. My references for the size of the eagle comes directly from blueprints of the vessel included in the Moonbase Alpha Technical Manual that came out back when the show first aired. I also have several models of the Eagle in various scales and all fit to a true length of 76 to 80 ft. There were, back when the show aired, several issues of Starlog magazine which gave dimensions of the Eagles as well as other vehicles and items in the show. I am still very eager to see your work and commend you on taking the time and effort to produce a series of models from a show that I enjoyed. Thank you for your response.