Alaska Octant
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Owner:
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Viones
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Released:
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Wednesday, April 17, 2013
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Origin:
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Arizona, United States
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Recently Spotted:
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Unknown Location
This is not collectible.
Use TB5M9ZB to reference this item.
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We want to visit as many cool places as we can before going to Alaska and then heading back to our home at Lone Cactus Water Tank in Phoenix, AZ. Please take pictures of the places and people that we visit. 
TFTFSL!!!!!
This tag is small enough to fit in match containers and 35mm containers, and large enough to be seen in big geocaches.
The octant was developed prior to the sextant. The reflecting octant was first developed by Isaac Newton in 1699, but did not reach the public until the mid 1700s after further development by Edmond Halley. The reflective octant used a split mirror and was far more accurate than previous instruments since it allowed accurate readings while at sea on a tossing ship. The split mirror could bring the sun (or star) and horizon into the navigator’s view at the same time with practically no optical parallax. It was also the first instrument that could be used during both night a day.
Being one- eighth of a circle, the octant could not measure greater than 90 degrees. Therefore, the octant became almost obsolete once the sextant was developed. There were several navigators who continued to use both the octant and sextant together until the late 1800s.
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Measures 33.5mm tall with a 3.5” long chain
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Trackable at Geocaching.com
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