[Milsurplus] Can you recognise this item?

[J Forster]

To me, it looks like ground, not airborn, gear. Some WW II British IFF gear
used motor driven capacitors to make a sweeping RF signal. To me, this looks
like a chunk of a test set of some kind.

Best,
-John




Steve Harrison wrote:

> If I'm not mistaken, the fifth photo shows a pair of phonograph-like motors
> that appear to be driving a pair of "gear" boxes which, I suspect, "wobble"
> the shaft of the two sets of differential caps back and forth. Notice the
> spring-looking grounding strap on each cap. In photo 4, the grounding strap
> appears to have been wound around the shaft too tightly by accident. I've
> seen something like this before but it was on a radar, IIRC. Could this be
> a glide slope indicator?
>
> Steve, K0XP