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AC ammeter

AC ammeter

Weston Electrical Instrument Corporation
circa 1930
AC ammeter

AC ammeter

Weston Electrical Instrument Corporation
circa 1900
AC mil-ammeter

AC mil-ammeter

Weston Electrical Instrument Corporation
circa 1900
ammeter

ammeter

Weston Electrical Instrument Corporation
1910-1920
ammeter for use with Zeiss photomicrographic apparatus

ammeter for use with Zeiss photomicrographic apparatus

Weston Electrical Instrument Corporation
circa 1920
DC ammeter

DC ammeter

Weston Electrical Instrument Corporation
circa 1905
D.C. ammeter

D.C. ammeter

Weston Electrical Instrument Corporation
circa 1921
DC ammeter (multiple scales)

DC ammeter (multiple scales)

Weston Electrical Instrument Corporation
1901-1930
D.C. microammeter

D.C. microammeter

Weston Electrical Instrument Corporation
1901-1930
D.C. microammeter

D.C. microammeter

Weston Electrical Instrument Corporation
1920-1930
D.C. milliammeter

D.C. milliammeter

Weston Electrical Instrument Corporation
circa 1929
D.C. milliammeter

D.C. milliammeter

Weston Electrical Instrument Corporation
1930-1940
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The Collection of Historical Scientific Instruments
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p. 617-495-2779 • f. 617-496-5794
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