BOOKS
Hughes, A.J.
The book of the sextant. With ancient and modern instruments of navigation
Glassgow, Brown, Son & Ferguson 1949
Sold
Bound, halfcloth with pictorial boards, 90pp. 37 illustrations in b/w. 22x14cm., very good condition (some minor traces uf use on binding). Loose leafe with "mariner's compass" included.
Itemnummer 1508 
Old Instruments - Principles of the Sextant - Construction of the Marine Sextant - The Booth Bubble - Construction of Air Sextants - Sextant Telescopes - Making Observations by Marine and Air Sextants - Errors and Adjustments of Sextants - Modern Sextant Accessories and Navigational Instruments,