Now I'm certainly no wiz at working out scale and ratio but I think I got this right... Measurements for the first SS proto were given at 320mm in length (give or take a mil') for jet mode. A real F-15Eagle measures 63.8ft in length. Crunching those numbers, I think gives up a scale of 1/59.8 exact; Damn close to 1/60. Can someone check me on this? Sorry if this has already been mentioned.