Does anyone know what this vintage sewing tool is for? It's 2 pieces
with a knob on the side that turns and is 3.5 inches tall. Any ideas
appreciated. Thank you!
Thanks all for your thoughts. Here's a photo of inside the base. When
you turn the knob it does just rotate the ball inside. The ball inside
has shallow horizontal grooves. Since it was in a sewing kit I assumed
it was used to wind/unwind something b...
