Ever needed to build something or estimate materials off of a set of blueprints? This useful measuring tool lets you quickly get accurate linear, area, and volume calculations by rolling it across prints, even if their scale has been thrown off via copying or faxing.
You never know when you need to measure something. Nick Mankey Designs created this handy leather wrist strap, which can be worn solo, or as a watch strap. It includes both metric and imperial measurements up to 9.6″ long. Available in sizes from 18 to 24mm wide.