Radius Caliper with no computation required. What you see on the screen is the measured radius.

I see a lot of design of radius gauge/caliper but they all require you to calculate the radius based on the measured value. But as an engineer I know you can make the depth of the caliper equal to the radius of the circle by just using the correct angle so I designed one.

It can measure between 14mm to 115mm.

Technically I can make it measure up to the maximum of the caliper but I'm limited by the bed size of my printer. This model can be printed on any printer that has at least 200mm x 200mm bed size.

I designed this to fit a generic digital caliper seen in the picture.