[codefox1]

Well you could always buy an old Eico 625, or if you want to upgrad, youi could buy a Hickok. Mine is a model 539.

Then again, your 41 tube ie electrically almost identical to the 6K6, so if you had an octal plug (as in salvaged from an octal tube dud, a six prong femail socket, and the pinouts (use nostalgia air on he web or any tube manual,) You could make an adapter. This would also work for measuring a 42 tube using 6F6 settings, and maybe others.