I first noticed these computer/instrument... Mainframes? On Stargate SG-1.
I've seen them in other shows too, such as Batwoman's batcave.
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?