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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
2 laboratory end supports for holding a single horizontal rod

2 laboratory end supports for holding a single horizontal rod

Central Scientific Company
1900-1925
2-mirror 36° kaleidoscope

2-mirror 36° kaleidoscope

Charles G. Bush
circa 1873
3 laboratory end supports for holding a single horizontal rod

3 laboratory end supports for holding a single horizontal rod

Central Scientific Company
1900-1925
5 amp shunt

5 amp shunt

Weston Electrical Instrument Corporation
circa 1912
6-inch flint-glass telescope lens

6-inch flint-glass telescope lens

American
1880-1920
10 amp shunt

10 amp shunt

Weston Electrical Instrument Corporation
circa 1912
10-inch celestial globe

10-inch celestial globe

C. Smith & Son
1825-1850
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
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