Nah the knitting / weaving idea doesn’t add up.

Basically, they can be used to weave a tube, but that isn’t really evidence that they were created with that intention.

The bronze would be polished up around the knobs if it were used that way.

You wouldn’t use bronze to make a weaving tool just because it’s so expensive. Maybe as a once off or special item, but not generally.

You don’t vary the size of your knitting or weaving by using a bigger template / more loose weave. One larger finger you would use more stitches: that’s fundamental to knitting and weaving.

At first glance it’s a nice idea but it doesn’t withstand critical thought.