Dew Point Meter Logger (Positector) Magnetic probe attaches to steel structures for monitoring climatic conditions. Measures and records climatic conditions including: relative humidity, air temperature, surface temperature, dew point temperature, difference between surface and dew point temperatures, and wet bulb temperature. Fast response, precision sensors provide accurate, repeatable readings Environmentally sealed enclosure – weatherproof, dustproof, and shockproof — meets or exceeds IP65 Internal memory storage of 10,000 datasets (60,000 readings) Conforms to ISO 8502-4, BS 7079-B4, ASTM D3276, IMO PSPC, SSPC-PA7 and US Navy NSI 009-32