"Found in a hunters trunk full of supplies, Canada, sometime between 1950-1980, The bottom dimpled part spins, the top blue part feels like wood, it’s very light"
A: "If you tug at the brass section does it come off? I’ve seen vintage sewing kits like this where the top is a thimble (which this could easily be, by appearance) and it holds spare needles, pins and a small amount of thread. For repairs on trips and such."
If I remember correctly that's a book holder, two straps are used to hold the books and that's the handle.
Used on a siphon hose to keep air from entering the vine wile not used, thus preventing vineger growth.
My Dad had some, he'd get them out when we went ice fishing!
Don't Google it, Duckle it!