The pendulum maintains its vertical position when the sextant is held in the hand, and by means of the rod, F, the horizon bars are kept at a proper horizontal level. The faults justly attributed ...

There's nothing mystical or complicated about a sextant. All it is is a device that measures the angle between two objects. The sextant makes use of two mirrors. With this sextant, one of 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 ...