Text copied from TM9-1985-2 German Explosive Ordnance 1953 :
Description: The body of the igniter forms a housing for the striker and for the detonator cap. The lower end terminates in a sleeve to which the detonator can be crimped. Holes are drilled in the body to accept the copper shear wire which passes through the striker, the ends being bent into the cannelure.
Operation: Pressure on the head of the striker shears the copper shear wire and forces the striker into the detonator cap. The subsequent flash passes to the detonator which in turn initiates the main charge of the mine.
Employment: This igniter was designed for use with the antipersonell glass bottle mine (Eismine 42).