Ultimate Ring Sizer Cone (US 3–15, Labeled)

This is a 3D-printable stepped ring sizer cone covering US ring sizes 3 through 15, designed for jewelers, makers, and anyone needing accurate ring measurements. Each step is clearly labeled, and the cone includes a side slot so you can easily slide rings on and off without twisting. Perfect for sizing existing rings or checking fit during custom ring design. ✅ Features US sizes 3–15 Each step labeled with the ring size Includes inner diameter (mm) and inner circumference (mm) reference chart Easy-slide side cutout for quick ring removal Prints cleanly with no supports Comfortable shape and smooth transition between steps