I found these while cleaning out the shed at the end of the barn to make room for dairy goats arriving this spring (and I'll have to build them a better barn this summer, project time...)
I don't think so, they're way too light for sash weights. It's hard to see in the photo - the handles are wood, the loop at the end is metal. A few ounces each would be my guess.
Some sort of tool, but for what? They could be as much as 80 years old, that's how long we've owned the barn - but I guess they could have been there when we bought it too,