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 5/23/2022 Dariunee discovered it   Visit Log

Seen at the maze in the GIGA event, thanks for showing!!
Discovered It 5/22/2022 djgoub discovered it   Visit Log

Vu lors du giga
Discovered It 5/22/2022 Cache-Michl discovered it   Visit Log

Seen at the maze to the giga event in prague. Thanks for showing.
Discovered It 5/22/2022 Vlsilhavy discovered it   Visit Log

Prohlédnuto během GIGAeventu. Díky.
Discovered It 5/22/2022 Turako discovered it   Visit Log

Seen at the Giga Event Prague 2022
Gesehen am Giga Event in Prag
Discovered It 5/22/2022 Chrom Juwel discovered it   Visit Log

:)
Discovered It 5/22/2022 Majka162 discovered it   Visit Log

Viděla jsem během víkendu na gigaeventu Praha 202(2) na oslavách 20-ti let geocachingu.
Děkuji za ukázání.
I saw during the weekend at the gigaevent Prague 202 (2) at the celebrations of 20 years of geocaching .
Thank you for sharing.
Discovered It 5/22/2022 Lilioneth discovered it   Visit Log

Objeven na gigaeventu v Praze při oslavě 20 let geocachingu. Děkuji za ukázání.
Discovered It 5/21/2022 søttrup discovered it   Visit Log

Seen at the Maze at the Giga event in Prague. Thanks for the view.
Discovered It 5/21/2022 Hesiodus discovered it   Visit Log

Seen in the Maze, thanks for showing!
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