My kitchen scale revisited

I’ve been musing a bit again about how useful my kitchen scale is for knitting and crochet. For instance, the other day, after I made the halter top for Selma, I wanted to know how much yarn it took, so before I sewed on the buttons, I weighed it, did a little math, and I knew exactly how many yards I had used. It’s great for reverse-engineering patterns from finished objects.

Wouldn’t it be nice, if along with a gauge measurement on a ball of yarn, the label would say how much yarn it took to create that gauge swatch? Then you’d be able to get an idea of how much fabric you could create with one ball, while you were still in the store. But since they don’t you can take it home, work up your swatch, weigh it, and then you’ll know.