The World's Best Compass from Brunton is a high quality compass that features a rare earth magnet in a composite body with silicone sealing. This design makes it very resistant to magnetic interference and depolarization as well as weatherproof and durable for reliability. It also has precision-aligned mirrors for excellent see-through sighting capabilities. The World's Best Compass utilizes both short and long sights for increased accuracy while taking bearing measurements as well as a tool-free declination of ±180°. Additionally, there are two bubble levels inside the compass for leveling.