Brass Circular Pocket Sextant by Cary, London, 19th Century, Consign Now DeptMaritime ArtsSizeDiameter 3 in. Sold for $244 Brass Circular Pocket Sextant by Cary, London, 19th Century, a 3-in. brass instrument marked Cary London with silvered scale, sighting scope and screw fit cover which acts as a grip. Diameter 3 in. Please note that this auction has ended. Click here for an overview of this auction.