Circular slide rule by Troughton and Simms, designed by William Froude c.1877, with inscription plate and three logarithmic scales, used at the Admiralty Experimental Establishment, by Troughton and Simms, London, 1887 Circular slide rule Froude 1877
Magic lantern slide showing scene from 'Alice's Adventures or The Queen of Hearts and the Stolen Tarts' Cinematography 1876
Planting and manufacturing of indigo: Indigo boilers and fecula table Oscar Jean Baptiste Mallitte 1877
Gold medal presented to Sir Henry Bessemer by the Emperor Napoleon III in 1867 Coins, Medals & Tokens 1867
Trial model and spare wheels for Charles Babbage's Analytical Engine Computing & Data Processing c. 1870
Section of the tree under which Livingstone's viscera were buried, Africa, 1873 Wellcome (general) 1873
Whitworth's workshop length measuring machine for measuring to an accuracy of 1/40,000 inch. Whitworth's workshop length measuring machine for Industrial Metrology 1871