[GreenKeys] OT: Triplett Model 1183-SC combination tester

[Alf Fisher]

GreenKeyers all,

I know there are many of us that like to fix up old test gear and I have 
one of these testers that is missing a Type H Plug in rectifier unit.

Does anyone know what it is and what's in it - I assume they are now 
made of unobtainium.

I'm sure a functional replacement could be made to do the job if I knew 
what was in it.

I've trawled the internet and found the Operating Instructions many times.

One website says it has a service manual but its the same Operating 
Instructions and one guy on the Antique Radios forum bought the full 
manual from AG Tannenbaum but they don't list it any more.

Can anyone help please?

Thank you and best regards,

Alf, G3WSD