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1 gallon glass bottle "BENZENE" empty

1 gallon glass bottle "BENZENE" empty

Central Scientific Company
early 20th Century
2 bakelite pulleys fork-mounted on rods

2 bakelite pulleys fork-mounted on rods

Central Scientific Company
circa 1929
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 printed centimeter scales

2 printed centimeter scales

Central Scientific Company
early 20th Century
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
60° fused quartz prism

60° fused quartz prism

Theodore Lyman IV
circa 1920
ACME Reflex Acmefone radio receiver

ACME Reflex Acmefone radio receiver

ACME Apparatus Company
1923
Acme type Y-1 vacuum tube radio detector

Acme type Y-1 vacuum tube radio detector

ACME Apparatus Company
1920
Alluard dew point gauge

Alluard dew point gauge

Central Scientific Company
1900-1930
alternating current motor demonstration (?)

alternating current motor demonstration (?)

Central Scientific Company
ca. 1910-1940
aluminum tuning fork, 100 VPS

aluminum tuning fork, 100 VPS

Central Scientific Company
circa 1950
aluminum tuning fork, C

aluminum tuning fork, C

Central Scientific Company
circa 1950
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The Collection of Historical Scientific Instruments
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