Model of Robert Duncan's screw propeller, with stern frame and rudder, as fitted to the Egyptian government yacht 'Sareea 1886-1887
Model, scale 1:30, of 240 ft wooden receiving tower for CH (Chain Home) radar, Mark II West Coast pattern 1940-1962
Model, scale 1:30, of 240 ft wooden receiving tower for CH (Chain Home) radar, Mark I East Coast pattern 1936-1962