Tautwire measuring machine.By trailing wire astern and counting revolutions, one can determine distances.Used to measure distance between floating hydrographic signals
3/20/2019 9:56:33 AM
Date: 1939
Credit: Chief Electronics Technician Angelo Ferrara, C&GS;
Location: New York Bight area
Subject: Charting
Subject: Navigation
Subject: Visual Signals
Subject: Floating