No toolbox is complete without a multimeter. I use this thing constantly around the house, as well as when tinkering on the motorcycle, drones, etc.. Not only has it saved me from many an unwanted shock, it has saved me guess work in a myriad of situations. This particular model is pretty old school, as evidenced by the analog readout. I got it in my Christmas stocking one year, in college. The rest of my siblings also received one that year. I think that my dad must have seen deal on them at Radio Shack (RIP) or something. Possibly the most valuable stocking-stuffer, ever. Thanks, dad!