JohnnyM.'s Sextant Geocoin
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Owner:
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JohnnyM.
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Released:
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Sunday, November 22, 2009
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Origin:
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Hlavní město Praha, Czechia
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Recently Spotted:
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In the hands of the owner.
This is collectible.
Use TB35QJF to reference this item.
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To be in small collection of my owner.
I want to travel from event to event with my owner.
You can see me in the hands of JohnnyM. mostly stays in Prague (Czech Republic).
The octant and sextant replaced most of the earlier navigation tools in the late 1700s such as the back staff, mariner's astrolabe, and quadrant. The octant is 1/8 of a circle and a sextant is 1/6 of a circle. The sextant allowed for more range in the degree scale over the octant.
The biggest improvement the sextant made over all other sighting tools (except the octant) is its double reflecting mirrors which eliminated the ocular parallax other tools caused. It also allowed for greater accuracy by having finer degree adjustments.
The sextant design is so universal and accurate that it is still used on ships today as a backup instrument to electrical navigation devices. Even aircraft used these as backups if their avionic systems failed.
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Tracking History () View Map
choupinette83 discovered it
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britispriti discovered it
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Heute mal ein wenig Ordnung in den Fotoordner gebracht und dabei noch den einen und anderen TB entdeckt
Danke für´s Zeigen sagen britispriti
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JindraK discovered it
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🦎 Viděn na keškovací výpravě 🐸 Díky za ukázku.🍀
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nette10 discovered it
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Irgendwo auf Bildern entdeckt
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mc12998 discovered it
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3Diamantenfahrer discovered it
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in Prag auf dem Giga gesehen
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Ziarno discovered it
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Please visit my instagram blog @geocaching_emperor where I post my gc finds :) Beware of spoilers! :) https://www.instagram.com/geocaching_emperor
Seen on Giga Prague/ Widziany na Giga w Pradze
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geo.luki discovered it
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Loguji dříve spatřená TB a GC z kešek nebo eventů. Děkuji za ukázání.
I log previously seen TB and GC from caches or events. Thanks for showing.
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geo.luki discovered it
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Loguji dříve spatřená TB a GC z kešek nebo eventů. Děkuji za ukázání.
I log previously seen TB and GC from caches or events. Thanks for showing.
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Karamel1 discovered it
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Tak jsem si dělal pořádek v TB kódech, co jsem si tak kde opisoval a ještě nezalogoval. TAkže viděl jsem, už tedy nevím kde, ale děkuji za ukázku tohoto předmětu .)
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