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 ...

An artificial horizon for sea use has been wanted for the last hundred years; in fact, ever since the sextant came into general use. It is a matter of common occurrence for mist or fog to obscure ...