Fuze Key No23

[ron3350]

I picked up this Key No23 marked for plugs and D.A. Fuzes RL 11-18. It fits my steel, copper plated 2" fuze plug for 18Pr HE .
I guess DA Fuzes means direct action? but I have not seen a fuze with a square needing this key. I guess they mean to remove the plug from the projectile. Can someone comment on this? Some photos to make the item interesting.

 

[Depotman]

Ron, you are correct; the No.23 key fits a large number of safety caps for both GS gauge and 2-inch fuzes and plugs with the square hole. I can only recall one fuze that the key would have fitted: FUZE PERCUSSION ROYAL LABORATORY No. 7, which dates from about 1860 and was obsolete in 1911. The Multi-key No.5 was actuallyused.

There are a large number of fuze and plug keys and I've listed over 35 used in WW1. There aren't too many that have survived though!

Regards, Depotman