My nephew is going away to trade school this fall for power sports training - motorcycle, jet ski, etc. mechanic. So, I decided to make him an "Oh My Gosh, I Forgot My Tool Kit" Tool Kit. There are a couple of things still to be put in it. This is something I hope he carries with him all the time. For those of you who will wonder, the multi-tester is built on a CR2032 battery holder. It tests continuity and voltage presence for 6V and 12V batteries.