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 5/21/2022 cachediversffm discovered it   Visit Log

Am Prag Event 2022 gesehen

Discovered It 5/21/2022 Sug@r discovered it   Visit Log

Viděla jsem během víkendu na gigaeventu Praha 202(2) na oslavách 20-ti let geocachingu nebo v některých nedalekých keších. Děkuji za ukázání.
I saw during the weekend at the gigaevent Prague 202 (2) at the celebrations of 20 years of geocaching or in some nearby caches. Thank you for sharing.
Discovered It 5/21/2022 Hunt78fr discovered it   Visit Log

Discovered at Prague during the Giga Event, or side events. Thanks for sharing.
Discovered It 5/21/2022 agnes.fleur discovered it   Visit Log

Vue lors du Giga à Prague le 14-15 mai.
Merci pour le partage
Discovered It 5/21/2022 kasjopea discovered it   Visit Log

Discovered during GIGA event in and around Prague. Thank you for sharing.
Discovered It 5/21/2022 Hansern75 discovered it   Visit Log

Seen in Mega Prague. Thanks 🐸 Greetings from Norway 🇳🇴
Discovered It 5/21/2022 MHMTeam discovered it   Visit Log

Seen at the Giga-Event in Prague on Saturday :-)
Discovered It 5/20/2022 Staerneching discovered it   Visit Log

We have seen it on the GIGA Event in Prag.

Lovely Greetings from Switzerland and thanks for showing!
Discovered It 5/20/2022 ecki_DD discovered it   Visit Log

Auf dem GIGA Event in Prag konnten wir viele schöne Coins und TBs entdecken. Vielen Dank fürs zeigen!
Discovered it. Thank you for sharing.
Discovered It 5/20/2022 Marsha. discovered it   Visit Log

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