I'm down to just one working and that makes me nervous.
Do you have a Bacharach, Mars, or Yokogawa leak detector that no longerworks? I offer a repair service for all H-10 G, P, PM, or B models. I am very experienced in repairing these and as some of you may know its a rare service to find unless you go through the manufacturer (which cost way too much). Contact me for more information.
Andrew
You said a mouthful.But I do know that they are excellent and are the best that I have ever found.