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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
BIRRC-P0177.jpg

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

5 Related Media Items

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BIRRC-P0177 (detailA).jpg
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BIRRC-P0177 (detailB).jpg
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