WASP rocket payload inertia rig at NASA's Lewis Research Center (now Glenn Research Center), c. 1966. Full caption: "WASP PAYLOAD INERTIA RIG AND CENTER OF GRAVITY RIG IN THE 8X6 FOOT WIND TUNNEL CLEAN ROOM"

Fullsize image: https://diqn32j8nouaz.cloudfront.net...g_fullsize.jpg



More info on the rocket:

https://core.ac.uk/download/pdf/80667749.pdf


Previously:

NASA spray testing tower - photo
NASA water deluge rocket launch system - GIF
NASA rocket test platform - GIF
Wernher von Braun and the Saturn V - photo
SpaceX gimbal thrusters - GIF