The Mountain Warehouse Compass Mills has a dial that is measured in mills and degrees. A magnifier lens helps to see the maps in more detail, and a luminous needle helps improve navigation in low light conditions. Bearing lines improve and make navigation easier with the Romer scales included for grid references as well as map measuring scales. The compass has a durable lanyard making it easy to wear when out and about. Made of a sturdy construction, it is ideal to use with an accessory such as a karabiner to attach to your equipment for easy access when on the move.