Escape Aid No. 5, Swinger No.8. One of MI9 / Christopher Clayton Hutton's ingenious escape compass designs utilising a simple metal pencil clip that would be very difficult for the enemy to identify as an escape tool. These clips were magnetised and had a tiny indentation punched into the back of the 'arm' at the centre of balance, allowing it to be placed on the tip of a pencil or pin. The clip would then point North. Extremely difficult to find and in good working condition. Comes with the period 'Utility' pencil shown. Stock code E24710.