Bronze bourdon tube 270 Degree sweep movements and durable nylon gearing have made these rugged and long lasting gauges a proven high performance favorite for over 25 Years. These mechanical gauges require no electrical power for operation making them an ideal choice for vehicles with no or low powered electrical systems. Size (IN):2-1/16 Inch Type:Mechanical Range (PSI):0 To 100 Pounds Per Square Inch Display:Analog Sweep:Short Sweep Face Color:Carbon Fiber Needle Color:Chrome Bezel Color:Chrome Number Color:White Lighting:Incandescent Includes Warning Indicator:No Warning Indicator Type:N/A Includes Peak Memory:No Liquid-Filled:No Includes Sending Unit:Yes Includes Wiring Harness:No Includes Fittings:Yes