wheelo

designer's own words:

Wheelo is a retarctable cutter that cuts straight without using a ruler. Working principle - "Apart from the regular structure, wheelo has wheels mounted at its base. These wheels are mounted at a tilted angle which makes the movement uni-directional and more stable. Thus its doesn't require any ruler or support to cut straight as the wheels solve the purpose."

Wheelo glamor shot

The wheels

Working principle

Usage