Center Finder

This is a cool idea, but the original was not scaled correctly, and also would require supports to print. I redesigned this to scale and removed the top feature to make it printable without supports. It can handle objects up to 6" wide. On the front edge it has offset steps in 1/8" increments. On the bottom edge it has 1/8", 1/4", 3/8", and 1/2" radius tracing circles. I also uploaded a metric version. The steps are 3mm and the radii are 5mm increments. I know 3mm is not the most useful, but it was what would easily fit in the design. All you metric users comment and let me know what steps would be the most useful for you.