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Apparatus for showing the uniform pressure of air in all directions |
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Electric machine after Wimshurst ... |
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Ferranti's Voltmeter |
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Inductive current generator for making alloys |
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Αccessories for sound production, (sirens drives) and Savart's wheel |
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3-dimension meter |
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8mm projection device |
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Absolute Electrometer, Braun’s |
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Accesoire of Carré Electrostatic machine |
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Accessories for optical discs |
