Sextant Geocoin JohnnyM.'s Sextant Geocoin

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Owner:
JohnnyM. Send Message to Owner Message this owner
Released:
Sunday, November 22, 2009
Origin:
Hlavní město Praha, Czechia
Recently Spotted:
In the hands of the owner.

This is collectible.

Use TB35QJF to reference this item.

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Current Goal

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).

About This Item

JohnnyM.'s Sextant Geocoin

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.

Gallery Images related to JohnnyM.'s Sextant Geocoin

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Tracking History () View Map

Discovered It 5/13/2023 JindraK discovered it   Visit Log

🦎 Viděn na keškovací výpravě 🐸 Díky za ukázku.🍀
Discovered It 3/26/2023 nette10 discovered it   Visit Log

Irgendwo auf Bildern entdeckt
Discovered It 3/13/2023 mc12998 discovered it   Visit Log

seen online
Discovered It 3/8/2023 3Diamantenfahrer discovered it   Visit Log

in Prag auf dem Giga gesehen
Discovered It 2/27/2023 Ziarno discovered it   Visit Log

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
Discovered It 2/1/2023 geo.luki discovered it   Visit Log

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.
Discovered It 2/1/2023 geo.luki discovered it   Visit Log

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.
Discovered It 1/30/2023 Karamel1 discovered it   Visit Log

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 .)
Discovered It 1/25/2023 maca&peta discovered it   Visit Log

Discovered
Discovered It 1/7/2023 1xixao1 discovered it   Visit Log

Vídeň na giga v Praze během loňského roku
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