A traditional mirror sighting compass commonly used by serious compass users such as hikers, mountaineers, backpackers and hunters.
A mirror sighting compass should be your choice when you must determine direction over long distances. With the mirror tilted to a 45-degree angle, you can check your direction by looking at the bezel in the mirror while sighting in the correct direction of travel. Because you needn’t lift your eyes from the compass in order to look
into the terrain, the direction determined with the Silva 1-2- 3 System® becomes more accurate.