The Stewart Warner Oil Pressure Gauge is a 2.1/16" gauge with a range of 0-100psi, designed for use with 12v systems. With the manufacturer part number 82116, this gauge is specifically branded by Stewart Warner, known for producing reliable and accurate automotive measurements. This product is ideal for boats and other vehicles looking to monitor oil pressure levels to ensure optimal performance and longevity of the engine. Condition as shown detailed in pictures.