I got very tired of always running to my needle stash where I had my Susan Bates Knit Chek to check my needle size so the last time I was at Jimmy Beans TKGA weekend I bought another to keep near my knitting chair. Brilliant! Can't believe it took me so long to figure that out. I should have bought two of them so I can put on in my knitting bag. Can't do without the Knit Chek.