I have relied for over 3 years on a 510 voltage meter to check the remaining voltage in my mechs before switching out batteries. Recently the cylindrical 510 voltage meter I used for so long began hard-shorting and collapsing my hot springs, so I can't use it anymore. Tossed it out. Now I'm trying to find a replacement, but this nice neat cylindrical voltage meter is proving a very hard thing to find. I ordered two of them from different vendors and got the same one from both, which proved to be the Tobeco unit, and both were wildly inaccurate. So now I'm thinking I have to make my own so I know what I have and know it's accurate. Where might I look for suitable components?
