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Elliott differential mercury thermometer (Beckmann type), by H.J. Elliott Ltd., Pontypridd, Wales, 1948-1954. Overall length 23.5 inches with auxiliary scale zero at lower end.

Elliott Differential Mercury Thermometer, 1948-1954

1948-1954
Beckmann's freezing point apparatus

Beckmann's freezing point apparatus, late 19th-early 20th century.

1890-1913
Beckmann type differential thermometer (No. 5580) by Griffin & Tatlock Ltd., London, England, 1945-1954. Overall length 23" with auxiliary scale zero at lower end, with box

Beckmann type differential thermometer (No. 5580) by Griffin & Tatlock Ltd.

1945-1954