Searle's torsion balance by W.G. Pye & Co. Ltd., Cambridge, England, with counterweight, scale pan, clip, microscope slide, and an incomplete set of fractional gramme weights. Searle's torsion balance by W.G. Pye & Co. Ltd. 1911-1965
Torsion balance for surface and interfacial tension measurements, with all accessories in separate case, made by White electrical instrument Co. Torsion balance for surface and interfacial tension measurements 1960-1969
Large component of Charles Vernon Boys' Torsion Balance gravitational apparatus by The Cambridge Scientific Instrument Co., England, 1889. Charles Vernon Boys' Gravitational Apparatus 1889
Large component of Charles Vernon Boys' Torsion Balance gravitational apparatus by The Cambridge Scientific Instrument Co., England, 1889. Components include: three tubes, one hood, split flanges, one mercury thermometer by J. Hicks of London, copper wire, length of bronze wire, two steel rods with brass spheres. Charles Vernon Boys' Gravitational Apparatus by The Cambridge Scientific Instrument Co., 1889 1889