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Cost and Accuracy Comparisons
Mechanical Current Meter System with AquaCalc Versus Other Point Velocity Discharge Systems
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Rickly Hydro
Hydro Power Equipment
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USGS Stopwatch Holder and Strap
This is the standard USGS leather holder and strap which enables the user to wear the stopwatch on his wrist.
For use with the USGS Stopwatch, sold seperately