oscilloscope voltage calibrator
Date1940-1960
Inventory Number1999-1-0003
ClassificationOscilloscope
Subject
Maker
Allen B. Du Mont Laboratories, Inc
1931 - 1960
Cultural Region
Place of Origin
Dimensionswithout cord: 11.4 × 20 × 12.3 cm (4 1/2 × 7 7/8 × 4 13/16 in.)
Material
DescriptionRectangular box with multiple knobs and dials on face. One connector is for the signal input, one for the signal output, and one for the ground. The big knob on the left adjusts the input voltage (0-100 volts) while the big knob on the right acts as a multiplier (times 0.001, 0.01, 0.1, or 1). It is designed to automatically maintain a constant output voltage level.
Etched on the instruments are the letters JMH, which stand for the donor.
Etched on the instruments are the letters JMH, which stand for the donor.
Signedon face: DUMONT / ALLEN B. DU MONT LABORATORIES, INC.
Inscribedon face: VOLTAGE CALIBRATOR / FOR / CATHODE-RAY OSCILLOGRAPHS
on top, in red: worn out
FunctionTo calibrate the DuMont model 350 oscilloscope.
ProvenanceProfessor John Michael Harrison, Department of Psychology, Boston University, pre-1998; gift to CHSI, 1999.
Allen B. Du Mont Laboratories, Inc
Date: circa 1948
Object number: 1999-1-0039a
Allen B. Du Mont Laboratories, Inc
Date: 1940-1941
Object number: 1997-1-0490
Allen B. Du Mont Laboratories, Inc
Date: circa 1950
Accessories: operating and maintenance manual for "cathode ray oscillograph types 304-A and 304-AR" in library
Object number: 2003-1-0174
Allen B. Du Mont Laboratories, Inc
Date: 1950-1960
Accessories: laboratory notes (in CHSI library)
Object number: 1997-1-0489
Allen B. Du Mont Laboratories, Inc
Date: circa 1948
Accessories: original box; Warranty Registration Card and Patent Notice (placed in instrument's file).
Object number: 2008-1-0015
Allen B. Du Mont Laboratories, Inc
Object number: WJ0256
Allen B. Du Mont Laboratories, Inc
Date: 1945-1946
Object number: RS1073
Allen B. Du Mont Laboratories, Inc
Date: circa 1952
Object number: 2003-1-0267
Allen B. Du Mont Laboratories, Inc
Date: 1945
Accessories: see Bowdoin laboratory notes in library
Object number: 1997-1-0522
Allen B. Du Mont Laboratories, Inc
Date: 1931-1934
Object number: VT0732