Originally Posted by
j.e.simmons
The ones I’ve used have a big hole in the top and a smaller device of some kind lower down. The surveying instrument mounts with a larger bolt, but there’s no reason you can’t put a 3/8 bolt through the holes and use nuts or wing nuts to attach. The large hole in the top can be covered and a 3/8 hole drilled. I’ve found fender washers that work. Cutting a piece of brass or aluminum large enough to cover the hole will also work. A head goes on top. While this may sound unstable, when you get it put together and toghtened down, I’ve found it very stable. Go to a hardware store with lots of fasteners (not big box stores - Ace hardware if there’s one around- and look around.
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