Compass A Story of Exploration and Innovation Alan Gurney W.W. Norton: 320 pp., $22.95 ...

So, if you want a true heading of 90 degrees, your GPS will report a compass heading of 96 degrees—the compass-card reading, plus the magnetic variation. If the compass’s magnetic deviation is also 5 ...

Magnetic North A marine compass will have one set of magnets that is balanced to seek out magnetic north. Magnetic north is not true north — as in the North Pole — but the location of Earth’s north ...

The magnetic compass — used in navigation for hundreds of years — is a tool that helps you find your way. Good beginner hiking/orienteering compasses can be found online or in outdoor sections ...

Magnetic compass is required equipment for aircraft flight. The gyro compasses will drift and must be corrected (sometimes as often as every 15 minutes).

Some inventions are so simple that it’s hard to improve them. The magnetic compass is a great example — a magnetized needle, a bit of cork, and a bowl of water are all you need to start… ...

While the Nseries products are very impressive multi-media computers, the latest Nokia device that really caught my attention at the Mobile World Congress event was the Nokia 6210 Navigator. The ...