nostr:nprofile1qy2hwumn8ghj7un9d3shjtnyd968gmewwp6kyqpq7d8jrjkkxaq8khh3veujl0kcqcyuvz5hyx4lywk4vmg24lmqa62shhpnpy to measure balls of lace weight yarn while knitting shawls, to know whether she has enough yarn (it was one of the first things I've ever did with mine when I bought it)