Chesapeake White SS 2" Cylinder Head Temperature Gauge (60-220AdegF)Perimeter-lighted White dial with stylish Blue and White graphics, polished stainless steel bezel, contoured White pointer and domed glass lens. A temperature gauge operates by sending a low amperage current through the gauge&';s meter to the ground via a sending unit with variable resistance. The resistance of the sending units increases or decreases with the changes in pressure, temperature, etc. 2" - Hole Size: 2.0625" (53mm)Specifications: Anti-scratch glass lens Perimeter lighted back light 12 VDC negative ground Can be adapted for 24 VDC systems Dual Scale - Imperial or Metric Factory P/N GP9454*Sold as an Individual**Gauge Cover not IncludedThis product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns. Specifications: Gauge Type: Cylinder Head Temperature Gauge Size: 2" Series: Chesapeake White Box Set: No Voltage - Input Range (Volts): 12/24 V Box Dimensions: 3"H x 3"W x 4"L WT: 0.4 lbs UPC: 759266138063