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How to spec a consistent looking finish

I have a machined aluminum plate 13.50" x 10.00" that calls for a 63A machined finish and then electroless Nickel plating. Three pieces came in from separate machine shops and they were all within spec but looked different. Is there a specification I can add to the drawing that would provide some consistency so that no matter who made them they would always look the same?

Thanks

Ernie Falcon
Mfr - Waltham, Massachusetts
2004

You can make up sets of referee plates that the parts have to be visually equal or better than. A set of two for each company and a set of two for your company. Why not just eliminate the company who's parts look the worst. The remaining two should not be that far apart.

James Watts
- Navarre, Florida
2004

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