Weems and Plath ParaLock Plotter

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Weems and Plath ParaLock Plotter enables you to quickly and accurately transfer GPS positions to and from any paper chart. Designed with a patented locking knob and two finger hole s for friction on the underlying chart, the Paralock has all the features of a standard parallel rule but is more suited to small chart tables and fits in the pocket. Opening width is the same as standard rules Has graduations so can be used as a protractor to determine compass bearing Uses mm metric scale across the bottom making it easy to take distances Perfect to keep track of latitude and longitude co-ordinates on a paper chart Lenth 71/4" (184mm) Weight: 0.21lb (95g) Show more