A new Digital Sextant has been engineered to provide back-up navigation in the event of failure or malicious adjustment of the GPS system, says manufacturer ScanjetPSM. The Digital Sextant provides a ...

Even though we live in the high-tech GPS era when it comes to getting around, it turns out the Royal Canadian Navy still trains with the very low-tech sextant for navigation. The sextant, a tool that ...

Sextants use a series of mirrors and a sliding arm to help measure the angle between celestial bodies and the horizon. Those measurements, the precise time they were taken, nautical almanacs, and a ...

December 6, 2021: In late 2021, Russian video appeared that showed a heavy bomber in flight with one of the crew using s slide rule, apparently to calculate course and/or fuel consumption rate. Most ...