Clyde Beck

vision plate n.	1930 C. F. Beck When Moons Met! in Wonder Stories Aug. 237/1 By pushing a lever, he brought the vision-plates to life. ‘Give me the rest of the fleet on plates one, two and three,’ he instructed the communications operator whose features were mirrored in the viewing discs. As the operator made his connections, the vision-plates lighted up, each showing the interior of one of the other three craft which comprised the Expedition.