iOS ships with a basic compass that you can use to find your basic heading when driving or hiking. It's not as robust as some third-party orienteering apps, but it will work in a pinch when these ...

This compass includes a sighting hole and notch so you can get accurate bearings, as well as a clinometer and a declination adjustment tool. The TruArc needle tilts up to 20° for balanced use anywhere ...

If shrunken down to micron size, a compass needle could wobble. (Courtesy: iStockphoto/tobias machhaus) A tiny magnetic needle just 10 μm long could be used to create a magnetic-field sensor that – if ...

Compasses were the trusted companions of sailors, explorers, and travelers for centuries, offering a simple way to find north. A small magnetized needle is set on a tiny pivot, allowing it to move and ...

For the first time in more than three centuries, your compass might finally be about to point true north. At some point over the next two weeks, compasses at Greenwich will point true north for the ...