age of plumb bob set

looks exactly like a sokkisha one I used in the early 1980's - only not in such great condition. It clipped to the tripod.

What's the big Wing Nut Collet looking thing?

It tightens the nuts on the tripod legs.

I'm pretty sure that came off an early Wild tripod. I would guess somewhere in the fifties, maybe earlier.

I believe it to be Wild also, but no marking found yet to confirm.
My father-in-law was always a Wild man. (don't take that wrong!):-X
And the 50's could be correct. He started with a T-2 in the latter 50's on copper mines in Chile.
Still have his T-2 also!