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have to do it
General Radio Impedance Bridge Type 1650 B, working For Sale
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General Radio Impedance Bridge Type 1650 B, working: $140
A used Impedance bridge made by General Radio Company Type 1650-B I tested this on a Meissner 456 Kc oscillator coil, and at null, came up with a Q = 1.1, so, it appears to be a working instrument. It has a few light marks on the outside. On the inside, it has tape glue over the Parameters dial, and a small white paint scrape from under the Multiplier dial. There is an extra wire clip under the input connectors from the previous owner. Otherwise it appears to be in excellent condition. Five pages of the instruction manual are included. The full Instruction Manual my be found by searching for: Impedance Bridge 1650-B manual. It is 66 pages long. 13.25" x 13" x 7", including handle. 15 lb. Batteries included.