Weems and Plath Parallel Chart Plotters and Protractors
The Weems & Plath Parallel/Course Chart Plotter and Protractor is a very popular W&P item that includes a chart plotter conveniently mounted on a roller for ease of use on a chart.
The chart plotter includes clearly printed distance scales at 1:20,000, 1:40,000 and 1:80,000 as well as an inch scale.
A semi-circular protractor is also printed onto the chart plotter for measuring courses and bearings against a meridian on the chart and also two quarter-circle protractors for measuring courses and bearings against a parallel of latitude.
Courses and parallel lines are transferred and kept parallel by means of two rollers which are mounted on a slide axis.
The Weems & Plath Parallel/Course Chart Plotter and Protractor is used for measuring or laying off courses and distances on a nautical chart and the set is supplied complete with a set of instructions.
The Weems & Plath Parallel/Course Chart Plotter and Protractor is a very popular W&P item that includes a chart plotter conveniently mounted on a roller for ease of use on a chart.
The chart plotter includes clearly printed distance scales at 1:20,000, 1:40,000 and 1:80,000 as well as an inch scale.
A semi-circular protractor is also printed onto the chart plotter for measuring courses and bearings against a meridian on the chart and also two quarter-circle protractors for measuring courses and bearings against a parallel of latitude.
Courses and parallel lines are transferred and kept parallel by means of two rollers which are mounted on a slide axis.
The Weems & Plath Parallel/Course Chart Plotter and Protractor is used for measuring or laying off courses and distances on a nautical chart and the set is supplied complete with a set of instructions.
