Profile: Wyatt Engineering, LLC designs, manufactures and markets differential flow measurement and control products. We offer cast iron Wyatt-Badger Lo-Loss® meter, which is a differential-producing flow tube that maintains its accuracy over a wide range of flow rates. The hydraulic shape of the PMT Lo-Loss® meter incurs a lower permanent pressure loss. Wyatt orifice products are commonly used as the differential pressure device for the measurement of the flow of fluids.