I first noticed these computer/instrument... Mainframes? On Stargate SG-1.
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I've seen them in other shows too, such as Batwoman's batcave.
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I'm sure I've seen these in other shows too. They are quite distinctive, looking like something out of the 60s.
They get periodic redressing but they are the same basic prop; flashing banks of lights, oscilloscopes and simple function generators, control panels with buttons.
What is the history of these props?