Impedance Bridge

General Radio Co., Concord, Massachusetts
General Radio Co., Cambridge, Massachusetts



Gray crackle finish case, GR-type tilt handle, corrosion around battery cap, instructions (typewritten) re battery taped to top of case, type 1650-A, serial 9651

Overall: 12 × 7 × 13 in. (30.5 × 17.8 × 33 cm)

Hood Museum of Art, Dartmouth: Allen King Collection of Scientific Instruments, Hood Museum of Art, Dartmouth College



Place Made: United States, North America


20th century

Object Name

Scientific Instrument

Research Area

Scientific Instrument

Scientific Instrument: Electronics

Not on view

Published References

"GR Experimenter," March 1959.


Physics Department, Bowdoin College, Brunswick, Maine; given to the Allen King Collection of Scientific Instruments, March 2007.

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