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A FUNDAMENTAL INSTRUMENT
...useful for measurements ranging from interelectrode capacitance of semiconductors to impedance of transformers weighing several tons.

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* Wide Range-0.001Ω to 10 MΩ, 1 pf to 1000 μf, 1 μh to 1000 h; 0.02 to 1000 for Q at 1 kc, 0.001 to 50 for D at 1 kc.
* Patented ORTHONULL* feature eliminates "sliding balance" - enables easy measurement of low-Q inductors and high-D capacitors. 
* C, R, and L measurement accuracy within ±1% (±5% for D and Q); accuracy holds over all ranges - not reduced at range extremes. 
* Unique "flip-tilt" cabinet serves as adjustable stand and doubles as protective carrying case. 
* Panel controls designed for operator convenience - switching arrangement and panel engraving make bridge operation self-explanatory. 
* Battery operator - completely self-contained; built-in transistorized 1-kc oscillator and null detector; single null indicating meter for both a-c and d-c measurements. 
Type 1650-A Impedance Bridge...$450
*U.S. Patent No. 2,872,639

Proven Accuracy * Day-In, Day-Out Dependability
Completely Self Contained * Convenient Operation 

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GENERAL RADIO COMPANY
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NEW YORK, WOrth 4-2722
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