Helical Gearwheel for Part No. 144-18, Helical Gearwheel for Part No.144-31

Michell, Anthony G., Helical Gearwheel for Part No. 144-18, Helical Gearwheel for Part No.144-31 (13 November 1925-30 November 1925), [UMA-ITE-2007006801230]. University of Melbourne Archives, accessed 30/04/2026, https://archives.library.unimelb.edu.au/nodes/view/313963