Agreed. I have a stack of these that I issue to friends and family who don't have a meter. Over on the vintage Suzuki forums, it's astonishing how many people are otherwise decently equipped with tools, but don't have a meter. When the inevitable charging problems crop up and they ask for help, all you get is "I dunno LOL" when you ask what voltage they're getting at the battery. When you're working on old bikes (or new bikes) a meter is just as essential as a 10mm wrench.