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What is this thing inside the black box?
Hello to all the community!
I have been tumbling across some Surveying instruments being sold as a whole lot online from Chicago, Illinois. The description says that it is only: NAVIGATIONAL INSTRUMENTS
On the picture below, I see some tripods, prism-holding tripods, a black box with some stuff, various prism reflectors, a red box with a total station case, another red box full of cable/accessories, and a yellow box with additional cables.
Now I would really like to ask the community if someone has any idea of what is inside the black box at the leftmost part of the picture below. What is it actually? It looks like some sort of rod but I am not sure.
Here is a close-up of the Black box:
It is just my curiousity but I am very eager to know what these are actually.
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