Made for for safety for OCCASIONAL outdoor activities: hiking, hunting, sailing, orienteering, etc. The multi-purpose whistle with built-in compass, essential for safe sports activities.Colour choice is random for on-line orders.
Your compass must be flat to detect the magnetic north correctly. Place your compass in the palm of your hand. When using a map, place the compass on the map on a flat surface.
If your compass is not detecting the north
Use your compass at sufficient distance from any magnetic sources which will affect its capacity to detect the north: high-voltage power lines, mobile phones, keys, metal objects, and even another compass can affect the direction.