F6144-003

Detail of scale mark on quintant Long Caption: This is an experimental quintant, whereby with the upper horizon glass angles up to 140° can be measured, and with lower horizon glass up to 180°. Nathaniel Worthington was apprenticed pupil to Matthew Berge, the successor of Jesse Ramsden. Credit line: © National Maritime Museum, Greenwich, London. Object: NAV1214 Artist: Nathaniel Worthington Date: circa 1840 Click here to buy a bespoke print of this image.