Switch No.10 Time Pencil with box.
INERT Switch No.10, Time Pencil. Widely used by SOE and special forces this delay action fuze was used in conjunction with a detonator or Bickford cord to set off explosives. This example has a green safety strip indicating an approx. 3hr delay. The pencil was initiated by crushing the copper tube that shrouds a glass ampuole containing corrosive liquid. This example comes with an original tin which originally contained 5 time pencils. Tin in excellent condition with some remaining stencilling.