Different configurations of Roberts Radio Current Meter.This meter was invented by Elliott B. Roberts.It was the first current system to telemeter current information.Buoy telemetry was an outgrowth of RAR radio-sono-buoy technology.Tests conducted o
3/20/2019 1:56:32 PM
Date: 1942
Credit: C&GS; Season's Report Roberts 1942-22
Location: Puget Sound, Washington
Subject: Charting
Subject: Tides
Subject: Tidal Currents