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. This pattern of escape compass eluded us for decades and has been extremely difficult to find. We now have one in our collection and this is your opportunity to add one to yours. In excellent working condition (pencil needs to be very sharp!). Comes with the period 'Stationary Office' pencil shown. Stock code E24711.