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/ 13
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
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
Amsler's polar planimeter

Amsler's polar planimeter

Crosby Steam Gage & Valve Company
circa 1910
Assorted gold and silver foil leaves

Assorted gold and silver foil leaves

Central Scientific Company
early 20th-mid 20th Century
assorted laboratory stands and clamps

assorted laboratory stands and clamps

Central Scientific Company
1850-1950
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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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