metal unit in back of series 3 land rover?????

hi all, just looking at the series 3 land rover i picked up the other day ( under torch light!!!) and it has some ex army bits in the back including this metal unit with adjustments on it and wondered what it may have held?? i have attached a photo. thanks all. am finding this forum very helpfull for a newbie.

Army radio fitment

doriz said:

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oh wow love that!!!!!!

In fact more like this, I'm sure there will be an old time radio operator along soon.

It would have had Clansman Radio tackle fitted mi thinks!
And i AIN'T that OLD