Scientific & Medical Objects

Philip Harris Scientific & Medical Objects

2 Galvanometer and a Sphygmomanometer First Image

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2 Galvanometer and a Sphygmomanometer First Image

2 Galvanometer and a Sphygmomanometer

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2 Reflecting Galvanometers, c. 1915 (1 of 1)

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3 Precision Galvanometers, 1900-1930 (1 of 1)

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Measuring Bridge by Hartmann & Braun, c. 1900 (1 of 1)

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Electrocardiograph by Charles Boulitte, 1928 (1 of 4)

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Group of Telegraph and Telephone Accessories, 1860 onwards (1 of 1)

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Group of Electric Measuring Instruments (1 of 1)

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An Electric Light Source with Scale Holder and Cord by (1 of 7)

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Rare Galvanometer by Jul. Otto Zwarg, c. 1890 (1 of 2)

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Astatic Galvanometer by Hirschmann, c. 1885 (1 of 2)

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Box Galvanometer with Pointer Reading, c. 1895 (1 of 1)

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Antique Marconi Galvanometer (1 of 8)

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A Western Electric Wheastone Post Office Bridge with Built-in Galvanometer (1 of 7)

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Elliot Brothers Astatic Galanometer with Glass Display Dome (1 of 5)

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Telegraph Accessories, 1880-1910 (1 of 4)

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