The unidentified scanner (please identify) should contain appropriate software (for download?) that will create an appropriate mesh file from the scan process. I suggest that using such a device and software for creating an engineering-grade object isn't going to be easily accomplished, while creating the object using one of the many free 3D printer programs could be easier. Even Tinkercad will allow you to build a series of primitives (cylinders, in your case) to create the part. I'm fond of OpenSCAD which has similar text commands for making parametric objects. It's common to create an object, then discover that the outer disk, for example, is one point five millimeters too large. The hole in the axis is easily accomplished in any of the design programs; Tinkercad uses "hole" for a primitive of the appropriate size placed in the center. Tinkercad also has alignment features to ensure that the objects are properly centered when required. OpenSCAD code is similar in that the parameters for placement are included in the document to ensure precision. It's difficult to determine from the photo: is there a slot near the edge of the disk, or is that an artifact from the broken edge? Consider to post a couple more photos (more is better) from varying angles with a single color background, but not overexposed or underexposed.