Precision Portable Hygrometer with Case Model  : HTD 200 Range  : -40 to 85 deg C/ 0 to 100% RH Resolution  : 0.01 deg C / % RH Accuracy  : ±0.2 deg C/ ±0.8 % RH Overall dimension in mm  : 35 X 80 X 165(L X B X H) Instrument Weight  : 560g(Approx)