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/ 13
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
35 bulbs

35 bulbs

Sylvania Electric Products, Inc.
20th Century
35mm Prado slide projector

35mm Prado slide projector

Ernst Leitz (company)
1950-1960
35mm Prado slide projector

35mm Prado slide projector

Ernst Leitz (company)
1950-1960
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
AC mil-ammeter

AC mil-ammeter

Weston Electrical Instrument Corporation
circa 1900
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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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