Discover some of the incredible tools, from astrolabes to sextants ... what of the most familiar navigation tool, the ...

There's no way around it: Celestial navigation using a sextant is a complex and involved process that involves a fair amount of calculating, correcting, referring to tables, knowledge of the ...

The angle between the two objects is then read off the scale. What makes a sextant so useful in navigation is its accuracy. It can measure an angle with precision to the nearest ten seconds.