Another week down, and more mystery objects

Before I start rambling on,I just want to let those of you out there who are following the phone stuff that I put up here - hang in there! I've had to work on a different area this week to make space and get some shelves out. That was done today and while my back is currently none too happy with my efforts, I'm pleased with what has been achieved. It will be time to bring in a skip in the next 10 days to get rid of some   seriously rusty stuff!

Anyway before I crawl into bed....here are some very interesting things I found today..

OK So I have absolutely no idea - other than its military. Thats determined from the second and last pics - there is a yellow mark, kinda like an arrow and a number. Had to take the pics outside as it weighed a ton (no wonder my back is wrecked !)  And I am unsure which way it should face - though looking at it now, pic #4 is probably facing the right way - so tray is on top and mechanism underneath.  But what did it do?  The dial on the side says "Push to Engage, Pull to Disengage"  So is it like something guns or cannons were attached to and this allowed them to be swivelled around???

Anyone who has any knowledge on military stuff please let me know - this is a very large unit (approx 2.5 ft across)

Next !

Is it from an aircraft?  No markings on it at all which is frustrating  !

Certainly RAAF with the A.M. logo - no idea what it is - I so need a listing database !!!  Part # is 5C/430

Another RAAF component - makes a mechanical noise internally when you rotate the dial on the side. Condition is pretty good. Of course the damaged label says Switch, but would love to know what sort of switch.  Part number is 27N/19

Nearly missed this one as it was hiding in the back - I would love to think it was for an aircraft wing light, but in all reality its probably something totally different !!  Also has two part numbers which I found odd given it seemed to be a single unit - and also missing the normal A.M. and crown logo but that may have been a space issue.  Part NUmbers are GC5/2190 on front and GC5/2194 on side.

Ok thats going to have to do for today. I do have some phone stuff in my garage now, and even some car parts, but will have to wait until I clean them up a bit 

Keep those solutions coming, your help and advice has been greatly appreciated by the whole family,

And shortly I will write a little bit about Grandpa and give you an idea of what an amazing person he was !