This crochet size and weight infographic details all the different yarn weights and the specifics of each. It breaks down the yarn type, weight, wraps per inch and ply. This infographic also includes a chart of different crochet hook sizes.
If you have ever considered knitting a vintage pattern you may yourself confused over the required yarn. Terms such as fingering and worsted can be enough to cause you to give up on your project before you begin.
"Baby Boots - this pattern is available as a free Ravelry download. These Baby Boots are knitted in sockweight 4 ply yarn and the foot is about 8 cm long. Larger sizes can be made by adjusting the needle size and the foot is worked in a stocking stitch welt to allow for growth. The boots are worked in one piece and then joined along the back of the cuff and the middle of the sole."