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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
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 1900
AC ammeter

AC ammeter

Weston Electrical Instrument Corporation
circa 1930
Acme oil microscope lamp

Acme oil microscope lamp

James W. Queen & Company
circa 1880
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
adjustable table on saddle foot for photomicrography

adjustable table on saddle foot for photomicrography

Carl Zeiss Jena
circa 1915
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