User Review: Suunto KB-14/360RD
This is the best and most convenient compass I have ever used. It is incredibly easy to get precise measurments even in poor lighting. It mounts on a standard camera tripod or monopod if you want more stability.
The only thing you need to be aware of when ordering one is that the internal mechanism must be "balanced" for different latitude (magnetic inclination) zones. So if you buy one for zone 1 (most of N. Hemisphere), it will not work properly in another zone (zone 4, for instance is S. South America and S. Africa and zone 5 is Australia). I do not know if it possible to rebalance the compass rose. So make sure you buy one for where you are going to use it.