Electronic Flow Meter is Simple, Reliable, Versatile and Economical. The Lomax Digital meter provides accurate readings while dispensing fluids. Easy-to-read large, four digit, 1" (25mm) LCD display that can be calibrated in Gallons, Quarts, Pints and Liters. Uses two AAA batteries for operation (batteries not included). The flow range for the LX-1371 is 3-30 GPM with a max pressure of 300 PSI (20Bar). The max liquid temperature for the flow meter is 140 degrees Fahrenheit, 60 degrees Celsius. Product development at Lomax goes beyond the physical product, to a deeper understanding of the end-users' needs. Engineered with the “user-in-mind”, Lomax products are built to the highest standards and incorporate many unique features that make work easier, faster, and cost-effective. Lomax is a manufacturer of lubrication and fluid management products. Our products, including grease guns, manual and electric pumps, funnels, drains, grease fittings, filter wrenches, and accessories, are built to the highest standards and incorporate many proprietary features. Lomax's mission is to provide professionals and consumers with innovative and high-quality products to get the job done right. Product development at Lomax goes beyond the physical product, to a deeper understanding of the end-users' needs. Engineered with the "user-in-mind, " Lomax products are built to the highest standards and incorporate many unique features that make work easier, faster and cost-effective. We have a passion for the design process. We listen to our customers and their ever-expanding requirements. Our unique products lead the field in design, quality, and performance.