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* [[Media:GR Exp 650-A 09_1944.pdf|Experimenter September 1944 describing Type 650-A]] | * [[Media:GR Exp 650-A 09_1944.pdf|Experimenter September 1944 describing Type 650-A]] | ||
* [[Media:GR Exp 650-A 04_1945.pdf|Experimenter April 1945 describing Type 650-A]] | * [[Media:GR Exp 650-A 04_1945.pdf|Experimenter April 1945 describing Type 650-A]] | ||
* [[Media:GR Exp 650- | * [[Media:GR Exp 650-P1 04_1946.pdf|Experimenter October 1946 describing Type 650-P1]] | ||
* [https://digital.sciencehistory.org/works/jm214p20f General Radio Type 650-A Impedance Bridge] @ Science and History Institute Museum Digital Collection | * [https://digital.sciencehistory.org/works/jm214p20f General Radio Type 650-A Impedance Bridge] @ Science and History Institute Museum Digital Collection | ||
<sup>1</sup>About $4,100 in 2023 dollars | <sup>1</sup>About $4,100 in 2023 dollars | ||
==Photos== | ==Photos== |
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