Mechanical CAD Drawing for 3D Printing

I'm in need of a basic mechanical CAD drawing that can be converted to a 3D print. I can provide photos and measurements or even a 3D scan prototype if required. The drawing doesn't need any advanced assembly, just a simple and precise object following these requirements:

- An understanding of drafting principles
- Experience with 3D Printing
- Attention to detail to accurately translate measurements
- A strong understanding of mechanical designs
- Proficiency in creating CAD drawings

Please note that precise measurements will be provided, so prior experience with handling precise data is a necessity.