Some may also be used to gauge the size of crochet hooks.
Then there are sewing and darning needles, knitting needles, bodkins, crochet hooks, pins, thimbles, finger shields for needlework and tape measures.
Boot and shoe laces, sewing and darning needles, knitting pins, bodkins, crochet hooks, thimbles and tape measures are all exempt from tax—but elastic is not.
For example, using a crochet hook, one can re-work them into larger knitted bights, e.g., by drawing four strands through the four below them, and so on indefinitely.
Round or cylindrical patterns are simple to produce with a regular crochet hook, but cylindrical knitting requires either a set of circular needles or three to five special double-ended needles.
One can also cro-tat with a bullion crochet hook or a very straight crochet hook.
In the nineteenth century, crochet tatting patterns were published which simply called for a crochet hook.
For example, many knitters use them to fix dropped knitting stitches, and tailors may use a crochet hook to thread a drawstring through its casing.