8A05.70 - Celestial Navigation Instruments - Sextants - Astro-compass
While the sextants are in working order, they are mainly for show and tell when talking about Longitude and Latitude.
- Philip M. Sadler, Christopher Night, "Daytime Celestial Navigation for the Novice", TPT, Vol. 48, # 3, March 2010, p. 197.
- Garet G. Nenninger, "Easily Constructed Mini-Sextant Demonstrates Optical Principles", TPT, Vol. 38, # 4, April 2000, p. 238.
- Thomas B. Greenslade, Jr., "Sextant (Photo)", AJP, Vol. 72, # 11, Nov. 2004, p. 1407.
- L. M. Celnikier, "Weighing the Earth with a Sextant", AJP, Vol. 51, #11, Nov. 1983, p. 1018.
- Janice VanCleave, "Explorers", Geography for Every Kid, p. 21.
- "A Simple Sextant", The Boy Scientist, p. 39.
- "Sextant", Science and Invention Encyclopedia, p. 2367 - 2368.
- Gerard L'E. Turner, Surveying and Navigation, Nineteenth-Century Scientific Instruments, p. 262 - 267.
- "Sextant", Pike's Illustrated Catalogue of Scientific & Medical Instruments, 1984, p. 69.
- Sophie Bushwick, "Make a Sextant from Junk", Popular Science, Jan. 2017, p. 84.
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