The Silva 70 series front and top reading compasses have one main yellow lubber line that allows easy and safe reading at a glance. Apparent scale siz..
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 char..
The “full-size” base plate compass for experienced navigators. Contains everything you need in a compass and has added functionality for GPS. The Expe..
A simple to use slide rule device for calculating the third variable given the other two (distance covered, given speed and elapsed time) to a NATO pa..
The 'full-sized' base plate compass for experienced navigators – used by NATO Forces around the world. Mainly used by the infantry as a soldier’s or o..
Inspired by a design from the 18th century instrument maker Peter Dollond, founder of a great optical empire. The original is in the London Science Museum. The gnomon, which casts the shadow, can be set for latitude on a sliding scale; and the whole instrument oriented in the meridian by means of a ..
A different shape to the instrument produced by Peter Dollond but essentially the same. Inspired by originals in the Science Museum. The gnomon, which casts the shadow, can be set for latitude on a sliding scale; and the whole instrument oriented in the meridian by means of a magnetic compass in the..
Named in tribute to the historic naval dockyards in Portsmouth, focus of much of Britain’s maritime history, this sundial has an adjustable gnomon that can be set for latitude on a sliding scale; and the whole instrument oriented in the meridian by means of the magnetic compass in the base. A tiny s..
This brass pocket sundial is a completely self-contained portable instrument, with a compass for alignment and lid for protection. The gnomon is set for latitudes around 50 degrees North, so will be most accurate in the south of England, northern Europe, Canada and so on. At these latitudes this is ..
Inspired by Greenwich, the focal point of world time, this brass pocket sundial is a completely self-contained portable instrument, with a compass for alignment and velvet carry pouch for protection.The gnomon is set for latitudes around 50 degrees North, so will be most accurate in the south of Eng..