THE GREAT MULLARD MAGIC BLOG — valve tester handle

Many users found the depression of the RHS handle to operate the Mullard High Speed Valve Tester  quite wearing -  and this at a time before  repetetive strain injuries were invented - stiff upper lip, grin and bear it!    The boffins at Salfords listened and voila, the tester was modified to have a one arm bandit style operating arm, not only that, if you pulled it and your valve tested for good emission, three cherries in a line appeared on the CRT.......................................  sorry couldn't resist that one. Mullard advertised the change as ergonomics with  an added security measure, to stop customers...