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 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 ...

With modern GPS, we often don’t think too hard about how to navigate, but GPS does not work very well on the open sea. That ...

Such devices have failed for shipboard use, because they are seriously disturbed by the slightest movement of the vessel. The fact is often overlooked that as the sextant is a double-reflecting ...