You know when you need one. Your basic compass admittedly points north, but has difficulty keeping up with all the running and fast turns. When a basic compass is still wobbling its needle and trying to get its bearings straight, a racing compass such as the Aim-30 will be pointing north already. The looks of this compass are not a coincident. The graphical look on the needle ring is based on the psychology involved in fast orienteering. This compass was developed with sprint orienteering world champion Mårten Boström. - Extremely fast needle action - Exceptionally stable - You can use the needle box for traditional orienteering, or take advantage of the AIM sectors - Double sapphire bearings - Neodymium magnets - Liquid filled needle box - Magnifying glass and check point templates - Included: lanyard with wrist lock, quick guide *What does "NH" stand for?* NH is short for Northern Hemispherethis compass has a needle balanced for use in the northern hemisphere.