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ID number: BIRRC-P0117 Institution: Research and Cultural Collections Named collection: Historic Physics Collection Artist / Maker: Weston Electrical Instrument Co., Newark and Elliott Bros. Title / Object name: Early d.c. Multimeter Object type: Electrical instrument Place made: Newark, N.J., USA Date made: Presume early 20th century Materials: Brass and steel on Bakelite panel in wooden case Measurements: 25.5 x 25,5 x 14.5 cm |
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This is a very early and bulky form of d.c. multimeter. It has patents dated 1890 to 1898. The moving-coil milli-voltmeter by Weston has been built into an integrated system by Elliott Bros. The large switch selects VOLTS or AMPS. The full-scale voltage ranges are 150 mV and 1, 3, 30, 50, 300, 600 V. The current ranges are 1.5 and 15 A. Inscriptions / Translations: On the meter scale: WESTON DIRECT-READING, MODEL C, PORT. MILLI-VOLTMETER No. 923 |
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