I wanted to be able to measure out small pieces of yarn to tie flies with but had no convenient way to do so at my fly tying bench, so I looked around and found these great little clear plastic rulers. They're 6 inch (15 cm) rulers that are easy to hide out of the way when not needed. An essential piece of kit for your fly tying bench? Maybe not. A cheap little convenience and minor quality of life improvement? Certainly.
Made in China.