Arrangement of Hopkinson Optical Indicator on 8 x 4 3/4 x 5 5/8 Crankless GasEngine

Michell, Anthony G., Arrangement of Hopkinson Optical Indicator on 8 x 4 3/4 x 5 5/8 Crankless GasEngine (22 October 1923-23 October 1923), [UMA-ITE-2007006802420]. University of Melbourne Archives, accessed 23/04/2026, https://archives.library.unimelb.edu.au/nodes/view/315153