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Scientific apparatus and instruments, Electronics

Weston Ammeter Model 45

  • 1888

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BY 4.0

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Finished wooden box; four metal feet on bottom (box must be set on its side for instrument to function); top of box has two brass holders for missing handle and metal strip; side lifts up half way exposing a painted metal instrument panel; panel has two cylindrical metal knobs on upper left side and a large meter in center; meter has a glass panel over a paper gauge; numbers on gauge range from 0 to 15; metal plaque on folded lid identifies manufacturer, model number, and serial number.

Ammeters measure electric current--either alternating (ac) or direct (dc).

Manufacturer
Place of manufacture
Format
Genre
Medium
Extent
  • 11.1 cm H x 19.7 cm W x 19.7 cm D
Inscription
  • (Gauge on meter) "AMMETER MODEL 45. No 10182"
  • (Plaque) "MADE BY THE WESTON ELECTRICAL INSTRUMENT CO / NEWARK N.J. U.S.A. / PATENTED / NOV. 6, 1888 MAY 14, 1889 APR. 29, 1890 / FEB. 17, 1891 DEC. 19, 1893 OCT. 4, 1898 / JUL. 16, 1901 / MODEL 45. No 10182"
Subject
Rights Creative Commons Attribution 4.0 International License
Credit line
  • Courtesy of Science History Institute

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Science History Institute. Weston Ammeter Model 45. Photograph, 2016. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/ht24wj48w.

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