This is one of the earliest medieval images of dyeing, from the mid-1300s. The quality of the image is not good; I've been looking for a better one, but haven't yet found one. In the first image, the dyer dips what appears to be a hood or veil into a relatively small wooden vat. In the second picture he gives it to a lady. On the table to her left rests a brush, presumably to finish the cloth. In a gesture seen in more than one period depiction of dyers, she is holding her nose.