Royal Laboratory: Fuze Diagrams (1917)


Royal Laboratory
Fuze Diagrams.
(For Information Only.)
December, 1917

Page 29 shows two often unidentified “cartridges” based in .303 British case:

Detonator, No. 107 Fuze, Mk II.L
Igniter with Delay, Mk. I


There are many different kinds of those .303 detonator cartridges.

If anyone sees any .303s that look like blanks but have no necks or strange case markings, do not fire them. Some of the detonators that they contain are apparently enough to blow up a rifle.