Switch No.9,Mk.I ' L Delay ' Instructional leaflet.

1944 Instructional leaflet for the Switch No.9,Mk.I or ' L Delay '. This leaflet was published by ' M.D.1 ' the originators of the L Delay that was in common usage within SOE and other Special forces. The leaflet was packed in the tin that contained the L Delays and gives an exploded view and a table of delays and other instructional details. In good, lightly stained condition. Scarce.

Code: 7779