Navigation Instruments

Parallel Rule

Parallel Rules

Professional and student grade parallel rules available in 400mm, 500mm and 600mm lengths. All models manufactured from 6mm thick acrylic.
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Chart Protractors and Triangles

Chart Protractors and Triangles

A range of Douglas pattern protractors and navigational triangles. Protractor available in 130mm and 350mm variants and 200mm and 230mm for the triangle.
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Chart Divider

Chart Dividers

Traditionally designed single handed and straight dividers. Available in in 8" and 7" lengths. Manufactured from solid brass with stainless steel points.
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Chart Plotter

Chart Plotters

Course plotters provide a quick and convenient method of plotting course and bearings. They are one of the most popular chart work instruments available.
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Slide Rule Calculator

Slide Rule Calculator

Speed, Time and Distance Calculator - simple to use slide rule that Calculates the third variable given the other two (distance covered, given speed and elapsed time)
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Brass Rolling Rule

Brass Rolling Rule

18" Brass and stainless steel rolling rule, finished in black and supplied in a wooden case. NATO approved and issued to Naval personnel worldwide.
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