1:1000 TOS PTOLEMY CLASS TRANSPORT U.S.S. PTOLEMY NCC-3801. SAUCER WIDTH AT 1:1000 SCALE - 12.7CM LONG (BASED OFF CONSTITUION CLASS IN UNIVERSE LENGTH OF 289M AND SAUCER WIDTH OF 127.1M). NACELLE LENGTH AT 1:1000 SCALE - 15.6CM (BASED OFF IN UNIVERSE NACELLE LENGTH OF 156M).