High-quality aluminum and plastic construction, rust-proof and wear-resistant for long service life. Suitable for water and gasoline applications. This meter is designed for non-commercial use, primarily for water and gasoline measurement. Easy to install and provides stable, reliable counting. Features a clear display screen for easy reading. Supports flexible horizontal or vertical installation. Manual reset function available. Equipped with a mechanical flowmeter that allows manual reset via handwheel. Cumulative total cannot be reset. 4-digit digital counter for gas or oil metering. Color: Black Material: Aluminum + ABS Units: Liters / US gallons / Imperial gallons Flow range: 20-120 L/min (5-30 GPM) Accuracy: 1% Nominal diameter: 25mm (1 inch internal thread) Medium: Water, gasoline Product Type: Mechanical Counting: 4-digit resettable counter, 8-digit non-resettable accumulator Installation direction: Vertical or horizontal Working pressure: Greater than 0.04 MPa Maximum working pressure: 50 psi (3.5 bar) Dimensions: 18 x 15 x 13.5 cm (7.09 x 5.91 x 5.31 in) Weight: 1984g Package Contents: 1 x Four-digit flow meter Note: Light and display differences may cause slight color variation from the actual item. Measurement error allowance: +/- 1-3 cm.