Features: The Needle is Smooth Sweeping and Surpasses the Original Version in the Boat(the Needle doesn'for t Bounce all over the Place as the Boat is Underway or in Rough Sea Conditions). Install diameter: Φ52mm or 2-1/16'', Indication range: E~F, Working voltage: 9-32v. Fit 12V-24V vehicle or engine. Suitable for all kinds of oil level sensors to display the position of the oil for tank level. The instrument adopts the instrument stepper motor core, which can make the product have low efficiency, long life and high precision. Main application areas: boats, construction machinery, vehicles, generator sets, engines, agricultural machinery, etc. Backlights: 8 types of backlights, including red, yellow, green, blue, purple, white, orange, and mixed colors, which can be adjusted according to your needsIndication range. Specifications: Material:Anti-fog Curved Glass Dial Diameter: Approx.5.5cm/2.16inch Installation Aperture: Approx.5.2cm/2.04inch Color: white background with silver edge/white background with gold edge/black background with gold edge/black background with silver edge/black background with black frame Voltage: 9-32V Scope of application: general Package Includes: 1x Fuel Gauge note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks for your understandings.