
Illustrated above are 2 types of metal gauges--the Susan Bates Knit/Crochet gauge and a sewing gauge.
The knit/crochet gauge has an "L" shaped window for counting stitches in swatches and projects. An additional feature is the crochet and knitting needle hole gauge.
This blue sewing gauge has travelled the world and is used measure toe lengths and cuffs during knitting.
The cherished "Magic Baking Powder" gauge is now an antique so it is rarely used anymore. It displays old English needle sizes.