The PRH2 is an economical, stand-alone psychrometer that measures wet bulb, %RH, dew point and dry bulb temperatures, all in the convenience of a pocket tool.This parts grabber has a strong magnet with a clawed hand gives your arm a 24-inch extension to grab out of reach parts. The claw helps you hook on to the parts for that little bit of extra force to get them moving out from under a unit. The magnet hangs onto them. Works as a great back scratcher too (we're not kidding). Sleek chrome finish and pocket clip look good in your pocket when not in use.