3D Mechanical CAD Design

I need a precise 3-dimensional CAD model for a set of mechanical parts and their assembly. The end goal is a file I can hand straight to manufacturing, so accuracy in dimensions, tolerances, and part relationships is essential... (Budget: ₹12500 - ₹37500 INR, Jobs: 3D CAD, 3D Design, 3D Modelling, Autodesk Inventor, CAD/CAM, Fusion 360, Mechanical Engineering, Solidworks)