Low Speed Wind Tunnel platform in 25 Hangar, early 1975.

John Houghton (JH2) on the left, with Peter Fenton looking over the desk.
Note the two Betz manometers, and the IBM545 card punch on the left.
The clock above the tunnel is still in operation at the 4.0m LSWT!

Thanks to Les Green for corrections and additions to the original caption.