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IntroductionChapter 1 A Short History
Astrolabe
Latitude Hook
Quadrant
Cross Staff
Back Staff
Sextant
Chapter 2 Elements of the Sextant and Four Vital Adjustments
Perpendicularity
Frame and Index Mirror
Frame and Horizon Glass
Parallelism
Index Mirror and Horizon Glass
Telescope and Frame
Adjustment Procedures
Chapter 3 Attachments and Accessories
Astigmatizers
Double Star Prism
Wide View Horizon Glass
Davis Prism Level
Bubble Horizon Attachment
Neck Straps
Visual Aids
Chapter 4 Care, Maintenance, and Repair
Oiling and Cleaning
Immersion Bath Procedures
How to Hold
Where to Put Down
Mounted Sextant Boxes
Emergency Silvering Techniques
Applying Paint
Resilvering Horizon Glass
Chapter 5 How to Buy a Sextant
Where to Find Them
Prices
Five Ground Rules to Avoid Problems
Taking Test Sights
Interstellar Test Table
Discovering the Dropped Sextant
Reconditioning Costs
Chapter 6 Sighting Techniques
Inversion for Location
Precalculating Azimuths
Rocking or Swinging an Arc
Sun's Upper Limb
Shades for Sun, Moon, and Venus
Correcting for False Horizon
Rough Weather Sighting Techniques
Making a Monocle
Chapter 7 Correcting the Sight
The Thirteen Errors
Correcting for Moon, Venus, and Mars
Correcting for Wave Height
Chapter 8 Timing the Sight Accurately
The Hack Watch
Using a Tape Recorder
Counting Paces and Stopwatches
Attaching Stopwatch to Sextant
Chapter 9 Searching for Stars
The Necessity for Preplanning
Finding Sunrise
Using the Rude Star Finder
Converting Local Time
Using H.O. Pub. No. 249
Making and Using a Wrist Board
Chapter 10 Sextants of Tomorrow
Is the Sextant Doomed?
Coming Developments
Appendixes
A--Sextant Check Procedures
B--Sextant Manufacturers
C--Distribution and Dealers
D--The Navigator's Basic Tool Kit
E--Making and Using an Artificial Horizon
F--Table of Interstellar Angles for Practice Sighting and Sextant Testing
G--Useful Addresses
BibliographyIndex
