25 DECEMBER 1959, Page 11

TV TUBES

SIR.—Your correspondent Mr. Wyner, Press Officer to Mullard Ltd., would have been more convincing if he had given some statistics regarding the life of TV tubes, rather than the simple statement that the makers guarantee them for a year and some last longer. Presumably by now the tube-makers have these figures and surely the public have a right to know how long beyond a year their tubes can be expected to last.—Yours faithfully,

JOAN H. COLEMAN

22 Lancaster Road, Birkdale, Southport MOORES' CODE