Show little fuse prevents blowout of any tube rube the turnover in vacuum tubes Is t tremendous in view ot of the fact that over 01 91 th per cent ot of all vacuum tubes never live their till full and intended life it Is no wonder that over tubes won sold last year tube protection Is the alio logical answer to the lie situation recent developments in a little fuse that slips over the filament terminal pf af any standard vacuum tube makes this hits protection front from dental blowout blow out but real and complete in every sense of the word |