Thermometer, hygrometer & thermometer available - Good performance; - Easy reading; - Reliable & durable; - Maintenence free Barometer:specification: 60mm, 70mm, 90mm, 108mm, 130mm, 152mm, 165mm & 180mmThermometerMeasuring range, -20 to 50 degree C, Precision, +/-2 degree CHygrometerMeasuring range, 20 to 98%RH, 20 - 45 %RH and 75-98%RH, +/-9%45 - 75 %RH, +/-6%Barometer Measuring range, 960 to ...