Hate not being able to quickly measure something because you have to dig out a tape measure or a ruler? The Rollbe Ruler fits on your keychain with its leather carry pouch. The soon to be essential part of your EDC measures flat, round, oblong and just about any other type of surface using a round measuring disc that rotates through the brass handle. The Rollbe is available in either Metric or Imperial measurements and comes in both a small (4″ or 10cm) and large (8″ or 20cm) size. You’re going to have to pay attention to what you’re measuring so you can count the rotations and you ultimately have to do some math at the end of the process, but that’s still more convenient than having to dig out a tape measure every time. The Rollbe Ruler is a fully-funded Kickstarter project that closes at the end of the month. Production is slated to start later this year with an estimated delivery date in November.