F1282-1

Obverse of Gunner's quadrant Long Caption: This is a gunners quadrant and is used to determine the elevation of a gun barrel. A spirit level is attached to the pivoting arm. A plumb bob and box are included. Credit line: © National Maritime Museum, Greenwich, London Object: NAV1049 Artist: Jeremiah Sisson Date: circa 1770 Medium: brass; glass Size: 15 mm x 390 mm x 120 mm Click here to buy a bespoke print of this image.