| These units incorporated mechanical gyroscopes and while the aircraft were fitted with sextants, it was the INUs that became the primary means of navigation. |
| Cook carried an early nautical almanac and brass sextants, but no chronometer on the first voyage. |
| This treatment is covered up to 6 sextants or 4 quadrants or up to 28 teeth per calendar year. |
| His expedition required the development and assemblage of a network of geographic and other technologies, including credit systems, ships, maps, and sextants. |
| Angular measurements are made using sextants, theodolites, quadrants and station pointers. |
| The problem is very complex, and navigators continued to use sextants and other astrolabes to find their location at sea. |
