Drawing of Barry Dock Railway Ocean Coal Company Class F 0-6-0ST Nos 47-49; 70-72; 99-1043752 4'8 1/2" Gauge Locomotive
Drawing entitled 'H.M. Colonial Cruisers Tauranga & Ringarooma Arrangement of W.T. Compartments, Sluice Valves &c'
105 Portrait photograph of Professor John Hopkinson, Professor Wilson and senior students at King's College, London
No scale. Two bear manuscript annotations; all three bear, in pencil, 'Opt. Compass'. Technical drawings of 'optical compass' used by Boys when repeating the 'Cavendish experiment'
A collection of glass lantern slides capturing the development of flight from an early set of images from the 1909 aviation meeting held at Reims, France through to images of aircraft from Imperial Airways and flying boats in the late Thirties. The History of Aircraft and Flying
3 items Original sketches of the apparatus used by C. Vernon Boys in his repetition of the "Cavendish Experiment"