Scanning would not be appropriate for this type of part really, particularly if you intend to machine it. The quickest way that would also end up with the best result would be to measure it up and produce a CAD model from scratch. Then machine it from there. As Origineelreclamebord has stated already it depends on your budget but for ones/twos I think most companies out there will be looking for high hundreds per part, particularly if you are not providing the CAD model either.
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