“The arc was extended from an octant to a sextant and a stout handle was added at the back of the instrument.”

“When the ten minutes are up, as signified by the ding of an egg timer, a piece of nautical equipment as pedigreed as an astrolabe or a sextant.”

“The goal of this expedition was to navigate to the North Magnetic Pole by traditional means using a sextant and an astrocompass.”

“Until recently, oceanographers gathered much of their data from solitary vessels that they navigated by means of stars and sextants.”

“Angular measurements are made using sextants, theodolites, quadrants and station pointers.”

“They had sextants, early microscopes, clocks, thermometers, and barometers.”