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ID number: BIRRC-P0115 Institution: Research and Cultural Collections Named collection: Historic Physics Collection Artist / Maker: Believed to be Siemens Title / Object name: Wattmeter Object type: Electrical instrument Place made: Probably Berlin Date made: 1902 Materials: Mounted in wood and with wooden storage case Measurements: Meter: 28 x 20 x 12 cm Case: 32.5 x 25 x 15 cm |
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A wattmeter measures the power dissipated in an electrical component. Connections are made to measure simultaneously the current flowing through and the p.d. across the component. This is a moving coil instrument of high quality and has a linear scale of 0 to 150 units. The range can be changed by inserting various plugs. Handwritten instructions and corrections dated Berlin 3 December 1902 are given in the lid of the box. Inscriptions / Translations: Precision-Wattmeter |
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BIRRC-P0115a.jpg |
BIRRC-P0115b.jpg |
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