It is a multi tester. It tests electrical currrents. You can tell like if your dryer does not work and you put it to a part--if the needles do not move it needs replacing probably. You can test lots of stuff. I just noticed it is with a purchase--so I am going to have to take it off, but if you buy the flashlight, I will add it to for you as a gift..
Well, I can't figure out how to get this off as just noticed requires purchase. I will refund the points to whoever wins & send a free flashlight coupon with you know.........................what.........I just buy a screw or the cheapest thing in there. Flashlight no purchase--just missed it on this one.