Needed a way to cut a piece of cardboard to get around the front outside edge of the tub. The other instruments were too short. It has 3 inch teeth that match the shape. Did the job for me.
Pros
EASY-TO-USE ADDITIONAL SHAPE TOOL: Our contour gauge measures 5" and 10" in just 3 steps, you can easily copy and trace the shape you want, plus two size measuring tools can help you measure and duplicate different shapes and can be used in agile work projects.