PHILIPS VALVE AGEING RACKS c1955

There has been much discussion over the merits and dangers in running up valves using precious valve testers rather than the safer option of using a powered rig for this purpose.   I have delved into the Mullard document archive today and came up with the photo below which shows Willeke Fokkink in 1955 at Philips Herleen attending to one of the giant valve ageing racks - simply super stuff indeed.