For sale is an incredibly rare original WW2 United States Air Force USAF Escape & Evade SOE Screw Compass Button. This screw button compass was made by J.R Gaunt & Sons, London. This is in excellent condition, and the compass still works. This screw button compass opens when you turn the head of the button clockwise and closes when you turn the head of the button anti-clockwise. This measures 24mm in diameter.