I took a few pictures tonight of the two armoured screens in our collection. I’m still not sure what type of aircraft or even vehicle they might have been fitted to. The panel (at one time) swivels and there appears to have been held in it’s up/down position with a locking pin and metal stop tabs.

The outer steel frame of the glass measures approximately 13 3/4″ wide by 14 3/8″ high, not including the tube at it’s base.

Regards,