Rollbe, A Compact Circular Stainless Steel Ruler That Measures Surfaces by Rolling Point to Point

The Rollbe is a super compact cirular stainless steel ruler, created by Karlis Krisjans and his team at The Work of Mind, that you can carry in your pocket. It is designed to “measure straight lines and curved surfaces by rolling from point to point.” Karlis is raising funds on Kickstarter to help with the manufacturing process.