Available in headphones or digital styles, the Price Type AA meters offer fast, accurate measurements for all but the lowest flows.

The headphone Model generates one click every rotation or one every five rotations of the shaft, according to the contact connection selected.

In the digital version, a slotted hub extension rotates between a light-emitting diode and a photo-receptor. The pulses produced when the slot aligns aligns with the LED and phototransistor are routed to the digital flow indicator (Model 1100), which converts them to a direct digital readout of stream velocity.

Either type can be suspended from a bridge or boat using the suspension cable outfit with a lead weight; or it can be mounted to on a wading rod for measurements in shallow streams, ditches, conduits or wastewater systems.