Bimetal Thermometer, Pressure Gauge, Temperature and Pressure Gauge manufacturer / supplier in China, offering Tridicator Boiler Gauge with Value Thread Brass, 1/2"Bsp, Dial Size 1.5"/2"/ 2.5"/3" Black Steel Case HVAC Gauge, Temperature and Pressure Gauge Back Connection Lens Plastic Press-in with Red Set Adjustable Pointer and so on.