Hi there I'm trying to identify some mystery World War II communications equipment and would welcome some help. I'm afraid my photo isn't very good. It's an enlargement of part of a group photo of the Signal Platoon of the 5/7 Battalion, the Gordon Highlanders, dated 8 April 1940. Their comms equipment (including semaphore flags and heliograph sets!) was laid out in front of the group. In the middle were 3 technical items. I think the item on the right is a Fullerphone, a secure field telephone that could plug into the civilian telephone network and handle morse code. However, I've no idea what the items on the left and in the middle could be. I had a look on a website which has photos of all the "number series" of British Army radios from WWII, but couldn't find anything resembling these. The battalion was not deployed overseas until 1942, so it could be pretty old stuff, even WWI vintage. Any comms experts out there who may know, your advice would be much appreciated!