Arrangement of Hopkinson Optical Indicator on 8 x 3 5/10 x 3 1/2 Crankless Petrol Engine

Michell, Anthony G., Arrangement of Hopkinson Optical Indicator on 8 x 3 5/10 x 3 1/2 Crankless Petrol Engine (25 May 1925), [UMA-ITE-2007006800142]. University of Melbourne Archives, accessed 02/04/2026, https://archives.library.unimelb.edu.au/nodes/view/312875