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 9/1/2012 *sushi* discovered it   Visit Log

Seen at MegaMoravia. Thank you very much. 🙂
Discovered It 9/1/2012 kofola discovered it   Visit Log

videny na megaevente MegaMoravia 2012
Discovered It 9/1/2012 glulik discovered it   Visit Log

videno na megamoravia
Discovered It 9/1/2012 Niki.CZ discovered it   Visit Log

Viden na eventu [url=http://coord.info/GC3EY82]MM12 - CAGeo's Flying Circus[/url]. Moc se mi líbil. Díky za ukázku.
Discovered It 9/1/2012 Babu team discovered it   Visit Log

Seen in Mega Moravia 2012.
Discovered It 9/1/2012 geogond discovered it   Visit Log

I Saw it in MEGA Moravia 2012. Thank You.
Discovered It 9/1/2012 DejanSt discovered it   Visit Log

Niekedy som rozmyslal ci si tento svetielkujuci kupit alebo nie.. Zatial ho nemam.... Videny v cirkuse na megamoravii
Discovered It 9/1/2012 Aquarius.1 discovered it   Visit Log

Zahliadol som ho pocas eventu Mega Moravia 2012 (GC35D5C)

I have seen on the event Mega Moravia 2012 (GC35D5C)
😎
Discovered It 9/1/2012 mikyfred.cz discovered it   Visit Log

Seen on megaevent MegaMoravia 2012
Discovered It 9/1/2012 ThomasPV discovered it   Visit Log

Seen on megaevent MegaMoravia.
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