The Groz Oil Control Gun with Digital Meter comes with a flexible hose extension to accurately control fluid deliveries in demanding applications. This oil control gun uses an oval gear mechanism and measures in Gallons, Liters, Quarts, Pints, Ounces, and deciliters. The meter and gun body are made from aluminum die cast with the Digital Meter having an electronic display (which uses one 3V Lithium Ion battery, CR2450) that is easy to recalibrate. This oil control gun also has a swivel at the inlet, within which has a strainer to keep contaminants such as dust and grit away from entering the gun itself.