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Blundell Harling

Discover the complete range of Blundell Harling marine navigation instruments — premium British-made chart tools designed for accurate chart work on yachts, sailboats, powerboats, and commercial vessels. Blundell Harling (based in Portland, Dorset) has been a trusted name in marine plotting equipment for decades, offering reliable, user-friendly instruments that simplify course plotting, bearing transfer, distance calculations, and tidal planning. Key highlights include:

  • Portland Course Plotter (best-selling rotary plotter with movable disc for quick magnetic variation correction, direct course/bearing readings, and grid for latitude plotting from GPS)
  • Portland Course Plotter and Divider Kit (complete set with plotter and brass dividers for comprehensive chart work)
  • Portland Navigational Plotter (advanced version with enhanced scales and features)
  • Parallel Rules (e.g., Captain Field's Pattern – traditional brass/acrylic rules for transferring bearings accurately)
  • Dividers (brass single-handed or straight dividers for measuring distances on charts)
  • Speed-Time-Distance Calculator (NATO-pattern slide rule for quick calculations of speed, time, or distance)

All Blundell Harling instruments feature clear markings, robust construction (often in acrylic/brass), comprehensive instructions (including RYA-approved guides), and compatibility with standard nautical charts. Ideal for RYA training, coastal navigation, passage planning, or professional use — shop genuine Blundell Harling chart plotters, rules, dividers, and calculators with UK & worldwide delivery from Marine Compasses UK.

Parallel Rule Captain Fields Pattern 400mm
2 - 3 Days
Brand: Blundell Harling Model: 0651.04
A parallel rule with protractor markings (double reading) and compass points, made from 6mm acrylic, bevelled on all four edges with solid brass links. All other metallic parts are made from noncorrosive materials. Rubber pads are fitted to the underside to prevent slipping...
£37.75
(Inclusive)
Brand: Blundell Harling Model: 0651.05
A parallel rule with protractor markings (double reading) and compass points, made from 6mm acrylic, bevelled on all four edges with solid brass links. All other metallic parts are made from noncorrosive materials. Rubber pads are fitted to the underside to prevent slipping...
£52.75
(Inclusive)
Parallel Rule Captain Fields Pattern 600mm
2 - 3 Days
Brand: Blundell Harling Model: 0651.07
A parallel rule with protractor markings (double reading) and compass points, made from 6mm acrylic, bevelled on all four edges with solid brass links. All other metallic parts are made from noncorrosive materials. Rubber pads are fitted to the underside to prevent slipping...
£56.75
(Inclusive)
Brand: Blundell Harling Model: 0651.82
budget version parallel rule intended for use in the classroom. It has rigid aluminium links...
£22.75
(Inclusive)
Brand: Blundell Harling Model: 0654.12B
Traditional design single handed divider made from solid brass...
£14.75
(Inclusive)
Brand: Blundell Harling Model: 0654.14B
Traditional design single handed divider made from solid brass...
£15.75
(Inclusive)
Brand: Blundell Harling Model: 0654.13B
Portland straight chart dividers of a traditional design in solid brass...
£14.75
(Inclusive)
Brand: Blundell Harling Model: 0654.16B
Portland straight chart dividers of a traditional design in solid brass...
£15.75
(Inclusive)
Brand: Blundell Harling Model: 0655.31
This simple-to-use slide rule device is for calculating the third variable given the other two (distance covered, given speed and elapsed time)...
£8.75
(Inclusive)
Brand: Blundell Harling Model: 0655.32
The Portland Plotter is one of the most popular chart work instruments and is widely used by RYA practical and shore based instructors. It provides a quick method of plotting courses and bearings and gives a direct reading of corrections for magnetic variation. This new version has been developed in..
£16.65
(Inclusive)
Brand: Blundell Harling Model: 0655.32KIT
A course plotter kit that includes a 7 inch Single Handed Divider and the Portland Course Plotter.The Portland Plotter is one of the most popular chart work instruments and is widely used by RYA practical and shore based instructors. It provides a quick method of plotting courses and bearings and gi..
£31.75
(Inclusive)
Brand: Blundell Harling Model: 0655.35
A plotter, with movable disc allowing magnetic variation to be set on the instrument.The moving arm is divided into millimetres...
£49.65
(Inclusive)
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