Tracer igniter No 7 or No.10

[pzgr40]

Who can help me on a clear drawing or cutaway picture of a Tracer igniter No.1, No.7 or No.10 as used in the 2 pounder HV HE shell (red circle).
Should not be too difficult as it is British....
Thank you in advance,
Regards, DJH

 

[MINENAZ16]

Nothing more (picture from BOCN)

 

[pzgr40]

Thanks , I also got some info on the dutch site.
Regards, DJH