WaterMark USGS Model 6200 “AA” Current Meter

Features precisely balanced bucket wheel which is mounted on a vertical pivot and is rotated by water flow. Rate of rotation is proportional to water velocity. Velocity is determined by counting bucket wheel revolutions over a given period of time. Revolutions can be monitored by headset or a digimeter (both sold separately). Use headset to manually count revolutions via an audible tone produced every revolution. The number of revolutions over a period of time are compared to a rating chart (included) which determines water velocity. The digimeter is a digital counter that electronically monitors revolutions and time, calculates water velocity, and displays it. Two separate binding posts on the contact chamber allow the operator to set unit to selectively count either every revolution or every fifth revolution for use in fast moving water. Meters are constructed of stainless steel, brass, and bronze with chrome-plating where required. Measures velocity from 0.1 FPS to 25 FPS. May be suspended by wading rod (sold separately) or cable from a bridge board (sold separately). Furnished with a foam-cushioned carrying case, rating chart, tail fin assembly, screw driver, assorted spare parts, special lubricant, and operation and maintenance manual.