Professional and student grade parallel rules available in 400mm, 500mm and 600mm lengths. All models manufactured from 6mm thick acrylic.
A range of Douglas pattern protractors and navigational triangles. Protractor available in 130mm and 350mm variants and 200mm and 230mm for the triangle.
Chart Protractors and Triangles
Traditionally designed single handed and straight dividers. Available in in 8" and 7" lengths. Manufactured from solid brass with stainless steel points.
Course plotters provide a quick and convenient method of plotting course and bearings. They are one of the most popular chart work instruments available.
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)
Slide Rule Calculator
18" Brass and stainless steel rolling rule, finished in black and supplied in a wooden case. NATO approved and issued to Naval personnel worldwide.
Brass Rolling Rule