Primarily, the compass was used for geomancy for a long time before it ... The inner circle had the eight trigrams and the outer circle the 24 directions (based on azimuth points).

While not quite up to the job it was originally intended for — positioning a 1.2-meter dish antenna — [Manuel] did manage to create a pretty capable azimuth-elevation positioner for ...

Electronic compass can accurately display the current angle and azimuth. Compass digital display range (0 to 360 degrees) with accuracy of plus or minus 8 degrees. It also has time and ...