
Colophon
Our look is the result of reader comments, our own experimentation, and
feedback from distribution channels. Distinctive covers complement our
distinctive approach to technical topics, breathing personality and life into
potentially dry subjects.
The tool on the cover of Mapping Hacks is a compass. Used since the elev-
enth century as a navigation device, the compass consists of a magnetized
needle stabilized on a friction-free pivot point. The lightweight needle acts
as a detector for Earth’s magnetic field, which attracts the needle such that
its north end points toward the North Pole. Contemporary mariners often
deploy the more sophisticated gyrocompass for navigation, which uses