They were meant to be folded in multiple ways as the bombers moved from island to island using the placements on the map the compass heading to mark and denote the flight path to target or runway. With multiple places on the map for the bombing navigator to place the aerial navigational compass, this map was intended for a wide range of use for bombers and U.Planes across all of the Pacific Islands. This map played an extremely vital part of the war and was heavily used by a U. Bomber navigators in the Pacific Theater. This item is in the category "Collectibles\Militaria\WW II (1939-45)\Original Period Items\United States\Field Gear, Equipment". The seller is "premierrelics" and is located in this country: US. This item can be shipped worldwide.