Online Collections at UoB - Objects
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
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
On body of meter: WESTON VOLTMETER MADE BY WESTON ELECTRICAL INSTRUMENT CO. NEWARK. N.J; U.S.A.
On attached metal plate: PATENTED ........ No. 923
On Bakelite panel: ELLIOTT BROS. LONDON
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