Sextants at greenwich: a catalogue of the mariner's quadrants, mariner's astrolabes cross-staffs, backstaffs, octants, sextants, quintants, reflecting circles and artificial horizons in the national maritime museum, greenwich
Auteur :
Bruyns, W. F. J.Morzer
Éditeur :
Bruyns, W. F. J.MorzerDunn, Dr. Richard,
ISBN :
9780199532544
Date de publication :
1 déc. 2009
Dimensions :
34,0 x 25,4 x 3,2 cm
Poids :
2224 g
Langue :
Anglais
Pays d'origine :
Grande Bretagne
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, and octants, sextants and artificial horizons.