Measureman 200 PSI Mechanical Dual Analog Air Pressure Gauge for Air Ride Suspension Systems Black Dial Backlit Clear Lens Red & White Needles 2" 52mmMeasureman 200 PSI Mechanical Dual Analog Air Pressure Gauge for Air Ride Suspension Systems Black Dial Backlit Clear Lens Red & White Needles 2" 52mm Dual needles (red & white) track two separate air springs simultaneously with a 0 200 PSI range, perfect for air ride. Features a high contrast black face with red & white needles and a bright backlight for clear readings. Fits all 2" (52mm) gauge pods and mounts for a universal, easy installation.