The F-42050LN Blue White Flow Meter is made from tough acrylic meter body, polished to a clear finish. Direct reading permanent scale. White back reflector for easy reading. High grade Viton o-ring seals. (Optional K-series hastelloy C-276). Can be used in direct sunlight. Available OEM options: Private labeling, custom calibrations, custom materials. Performs better than the competition. Top quality at low prices. MTR2 10-50 GPM ACY 1.5 MPT