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cathode ray oscillograph, Type 224

cathode ray oscillograph, Type 224

DuMont Laboratories
1945-1946
cathode-ray oscillograph, type 304-A

cathode-ray oscillograph, type 304-A

DuMont Laboratories
1950-1960
cathode-ray oscilloscope

cathode-ray oscilloscope

DuMont Laboratories
circa 1948
cathode-ray oscilloscope

cathode-ray oscilloscope

DuMont Laboratories
1940-1941
Dumont type 297 oscillograph-record Polaroid instant camera

Dumont type 297 oscillograph-record Polaroid instant camera

DuMont Laboratories
circa 1952
oscilloscope cathode ray tube

oscilloscope cathode ray tube

DuMont Laboratories
circa 1948
oscilloscope voltage calibrator

oscilloscope voltage calibrator

DuMont Laboratories
1940-1960
power supply for cathode ray oscillograph 496-A

power supply for cathode ray oscillograph 496-A

Weston Electrical Instrument Corporation
1931
vacuum tubes for cathode-ray oscilloscope

vacuum tubes for cathode-ray oscilloscope

Radio Corporation of America
circa 1948
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The Collection of Historical Scientific Instruments
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