For over 100 years, Gurley has manufactured hydrological current meters and accessories for open channels, rivers and streams. Products include Price and pygmy meters, digital indicators and headphone sets, support systems, including cranes, sounding reels and more. Their rugged, durable construction assures many years of trouble-free, accurate operation under the most difficult of field survey conditions. All the instruments are completely portable and self-contained for operation in a field environment.