Obviously, that depends on your standard of accuracy. The sextant is accurate enough to allow you to navigate from where you are to where you want to be. It may not be as accurate at GPS, but it is accurate enough for its intended purpose.
Sextant
Sextant.
That's the purpose of the sextant.
Sextant and clock or compass
sextant, compass, globe, longitude, latitudeThe compass rose on a map.
The sextant.
The GPS (global positioning system) satellite is far more accurate and easy to use. As to which is more important, that is a tough question, and depends upon your circumstances. http://en.wikipedia.org/wiki/Sextant
sextant
you can find sextant on history.com
you use a sextant to navigate.
It's a graduated cylinder.
you draw a sextant by looking at googler in the images.