This is a German standart finger ring sizer.3d printable 3d models are attached. This is the most essential tools for the every women to keep it at home. 3d editable iges file format also attached. You can measure 13 1/2 to 22 German stander finger ring size. Please find my other sizer 3d model for Japan, EU, UK and US standard. For 3d printing use flexible materials as like rubber. 3d printing resolution should be below 0.01mm.
Please contact with me, if you get any difficulty with the 3d files.
Thanks, Mahbub