John Sukey I don't have a British trench periscope BUT

[Enfield trader]

I have one of these .....

And I have one of these thanks to you !.... Remember way ..way ..way ..back

 

[John Sukey]

Memory fails me, but I do have two of each in both pictures.
I suppose you got the thrid tripod.
Now I still need another two scopes for the other T's
Only one in the No4 transit box and the other one is in the case for the L42A1.

 

[Enfield trader]

Yea John I know the feeling -- I still need 2 telescopes for the other 2 T's

No L42A1 here but L39A1 and a "pre" L39A1