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Washington, D.C., circa 1919. "Chesapeake & Potomac Telephone Co. equipment." More communications gear at what seems to be the Capitol. The box on the left bears the nameplates of Leeds & Northrup, Philadelphia, and Western Electric. Harris & Ewing Collection glass negative. View full size | The knobs.
A lot of this test equipment was being used right up to the time that transistorized test equipment became readily available. It didn't really wear out. If a tube burnt out, you replaced it and kept on going. I was using similar stuff well into the 1960s.
They made calibration and test equipment for a long time. Their main competitor was General Radio. These companies used a lot of oak in their product cabinets.
General Signal eventually bought them, and they turned into nothingness.
I find it curious that there is no Wikipedia page on this company, which everyone over a certain age who works in electronics has heard of.
When I was a child, my father worked on electronics similar to this -- though not quite as complicated. He would warn me about the high voltages lurking throughout the cabinet, and the smell of ozone hanging in the air would drive home the point.
This gear looks like equipment Professor Pepperwinkle might have in the back of his laboratory. When something goes awry, or some bad guys with evil intent steal the Professor's latest invention, send a signal to Superman and pray that he'll save the day.
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