Sextants at Greenwich: A Catalogue of the Mariner's Quadrants, Mariner's Astrolabes, Cross-Staffs, Backstaffs, Octants, Sextants, Quintants,

by W.F.J. Mörzer Bruyns and Richard Dunn

This book describes the history and development of navigating instruments. Before satellites, these were used to measure the altitude of the sun and stars above the horizon, to determine the ship's position at sea. The book also contains a catalogue of 347 mariner's astrolabes, cross-staffs, backstaffs, sextants, and artificial horizons.

• Format: Hardcover
• Language: English
• ISBN: 0199532540
• ISBN13: 9780199532544
• Release Date: August 2009
• Publisher: Oxford University Press, USA
• Length: 323 Pages
• Weight: 4.75 lbs.
• Dimensions: 1.3" x 9.9" x 13.2"