this compass is made from solid brass with a galleon engraved on the lid

showing The Scilly Isles

Case diameter 5cm

where they sedately sink or float as the surrounding air gets hotter or colder

it is a rare and exclusive item with unparalleled history and provenance

Captain Campbell's Vernier Sextant GORILLA this compass is made fromFull size Vernier sextants were, in skilled hands, instruments of great accuracy, practicality and beauty a joy to own and use, but also essential to the safety of the ship. Our replica is dedicated to Royal Navy Captain John Campbell, who developed the instrument in 1757. Crucially his invention appeared at about the same time as the first accurate, portable chronometers and the combination of the two transformed navigation from guesswork to science,