Faria Beede Instruments White 2" Water Temperature Gauge 100-250F Dress. 0625" (53mm) A temperature gauge operates by sending a low amperage current through the gauges's meter to ground via a sending unit with variable resistance. The resistance of the sending units increase or decrease with the changes in pressure temperature etc... As the sender's resistance varies the amount of current allowed to flow through it to ground changes and the meter deflects showing the temperature. Available for MG systems J1939 CAN Bus or J1939 Stand-Alone systems and mechanical types. Benefits: Standard (100-250 F) Metric (40-120 C) Dual Scale With or without Warning Lights Specifications for Faria Beede Instruments Dress White 2" Water Temperature Gauge 100-250F: Manufacturer: Faria Beede Instruments Color: White Features of Faria Beede Instruments Dress White 2" Water Temperature Gauge 100-250F Perimeter-lighted black dial Stylish blue and white graphics Black aluminum bezel with burnished edge Flat glass lens American and metric scales and icons Package Contents: Faria Beede Instruments Dress White 2" Water Temperature Gauge 100-250F Faria Beede Instruments 13110: White 2" Water Temperature Gauge 100-250F Dress