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1-1-10 ampere shunt

1-1-10 ampere shunt

Weston Electrical Instrument Corporation
late 19th-early 20th Century
1amp shunt

1amp shunt

Weston Electrical Instrument Corporation
circa 1912
5 amp shunt

5 amp shunt

Weston Electrical Instrument Corporation
circa 1912
10 amp shunt

10 amp shunt

Weston Electrical Instrument Corporation
circa 1912
21 teeth in vials

21 teeth in vials

Harvard Dental School
circa 1900
100 amp shunt

100 amp shunt

Weston Electrical Instrument Corporation
circa 1912
1000 amp shunt

1000 amp shunt

Weston Electrical Instrument Corporation
circa 1912
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
A.C. voltmeter, 0-125

A.C. voltmeter, 0-125

Weston Electrical Instrument Corporation
circa 1925
ammeter

ammeter

Weston Electrical Instrument Corporation
1910-1920
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The Collection of Historical Scientific Instruments
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