The Rollbe is a wheel-based ruler that you may use to get measurements by moving it between 2 points. In contrast to some wheel-based rulers we have seen, this tool doesn’t feature electronics that let it track the rotations all on its own. Alternatively, it is created for an entirely manual procedure, such that you’ll need to count every turn on your own, so this takes some serious concentration and awareness. If you’re ready to go through that, then this provides a highly-compact and functional measuring tool. Due to the wheel-like form element, the ruler will take measurements on both curved and flat surfaces, allowing a complete load of measuring chores.