Meter with light-bulb indicator for the Hopkinson-Thring torsion meter, by Siemens Bros. and Co., London, 1906-1912 Hopkinson-Thring Torsionmeter suitable for shafts 5" to 8" 1906-1912
Hopkinson-Thring Torsionmeter consisting of a long sleeve casting and short collar casting clamped to a model wood shaft, used to measure torque, patented by Bertram Hopkins and Leonard Godfrey Pinney Thring in 1906, and made by Siemens Bros. and Co., London, 1906-1912 Hopkinson-Thring Torsionmeter suitable for shafts 5" to 8" 1906-1912
Drawing of Hopkinson-Thring patent Torsionmeter by Siemens Brothers and Company Limited, London, England, 1906-1912 Drawing of Hopkinson-Thring Torsionmeter 1906-1912