This Helicopter Flying Course Calculator was manufactured in the United Kingdom and was used by the Great Britain Navy during the Gulf War (1990-1991). The calculator was specifically designed  and is an excellent addition to any collection of Militaria or Surplus/ Equipment. The calculator is an Issued item and has been in storage. It is a unique item that is perfect for those interested in the history of military technology. Don't miss the chance to add this rare piece to your collection.