Bimetal Thermometer, Pressure Gauge, Temperature and Pressure Gauge manufacturer / supplier in China, offering 75mm Hygrometer Field Workshop, Warehouse, Storage, Outside, Dial Size 75mm Hygrometer with Bezel Brass Accuracy +/-5%, Back Connection 75mm Hygrometer with Range 710-800mm/Hg &970-1060mbar, (or Customized) and so on.