This gauge is designed and manufactured to exacting quality standards to give maximum service and reliability. It can presently operating indicator lights. Gauge insures greater accuracy and provide a wider margin of safety than indicator lights, which fits all cars/trucks/tractors and marine engines. Features - Color: Shown in the pictures. - Material: Metal. - Size:Approx. 19 * 7.3 * 6cm/ 7.5 * 2.9 * 2.4 inch (L*W*H). - Power:DC 12V Professional. - Measurement range: 50~150 Celsius. - Numbers and pointer clearly show. - Lighting on the dial for easy reading in the darkness. - High sensitivity and easy operation. - Professional installation is Highly Recommended. - Universal fit for: most of or motors. - Oil pressure gauge indicates: Low Oil Level Clogged oil filter Loose or broken oil line Oil foaming Improper oil viscosity Engine bearing failure. - Water tempereture gauge indicates: Low coolant level Defective thermostat Broken fan belts Blocked radiator Leaking cooling system.