Scientific & Medical Objects

5 Physical Demonstration Instruments, c. 1920 First Image

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5 Physical Demonstration Instruments, c. 1920 First Image

5 Physical Demonstration Instruments, c. 1920

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5 Physical Demonstration Instruments, c. 1920 (1 of 4)

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Physical Demonstration Instrument “De la Rive’s Electric Egg”, c. 1880 (1 of 1)

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Telefunken Single Audion Box Type ED222, c. 1920 (1 of 1)

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Group of Physical Demonstration Models, c. 1900 (1 of 5)

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Large Dynamo-Electric Demonstration Machine, c. 1920 (1 of 2)

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4 Physical Demonstration Models, c. 1910 (1 of 1)

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Physical Demonstration Apparatuses, c. 1900 (1 of 3)

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6 Physical Demonstration Models, c. 1910 (1 of 1)

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