Models View all SELF PROPPELLED FLYWHEEL STEAM ENGINE 1 43 0 Experimental Horizontal Twin Cylinder Linear Steam Engine 3 37 4 Protractor 11 138 2 Steam Traction Vehicle 24 169 8 "One-Lunger" 8 82 1 Horizontal Beam Steam Engine with Centrifugal Pump 7 102 1 Work experience Design of personal submarine. Operational depth of 1200 feet.