The PosiTector DPM Dew Point Meter measures and records climatic conditions, including relative humidity, air and surface temperature, dew point temperature, and the difference between surface and dew point temperatures. The new universal gage body accepts all PosiTector 6000, DPM, and SPG probes, easily converting from a dew point meter to a coating thickness gage or surface profile gage. DeFelsko Corp. 800-448-3835.