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Torsion Balance

circa 1928

Torsion Balance

1890-1910

Torsion Balance

1923
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