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alternating current motor demonstration (?)

alternating current motor demonstration (?)

Central Scientific Company
ca. 1910-1940
bimetal thermal switch demonstration

bimetal thermal switch demonstration

Central Scientific Company
ca. 1920-1950
degree scale for oscillation demonstration apparatus

degree scale for oscillation demonstration apparatus

Central Scientific Company
c. 1910
Hope's apparatus to show the maximum density of water

Hope's apparatus to show the maximum density of water

E. Leybold Nachfolger
1900-1940
LC circuit demonstration

LC circuit demonstration

Central Scientific Company
mid 20th Century
lead weight for oscillation demonstration apparatus and accessories

lead weight for oscillation demonstration apparatus and accessories

Central Scientific Company
c. 1910
metal balls for oscillation demonstration apparatus (4)

metal balls for oscillation demonstration apparatus (4)

Central Scientific Company
c. 1910
oscillation demonstration apparatus

oscillation demonstration apparatus

Central Scientific Company
c. 1910
pressure demonstration apparatus

pressure demonstration apparatus

Central Scientific Company
ca. 1890-1910
tripod for oscillation demonstration apparatus

tripod for oscillation demonstration apparatus

Central Scientific Company
c. 1910
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The Collection of Historical Scientific Instruments
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