Gentlemen, The court has adjourned, the case has been put to bed, and the jury has ruled in my favor! After perusing the page references you guys suggested and mulling over the comments you gave, the judgement has been passed that one cannot control form, or profile, with a roughness spec. I believe Jeff defined it best when he said that "the roughness spec must be met within the confines of the profile". The roughness can only refine the profile's surface, not define the surface's profile. (How's that for techno jibberish!) The surface profile could be convex, concave, convoluted or straight and all could have the same roughness spec, so how could roughness control the shape? Simple; it can't. Thanks, guys. You've been a great help! == Ross === P.S. Now if we could just get all the customers, designers, and metrologists on the same GD&T page...(here I break out in song...)Oh, what a wonderful world it would be... === P.P.S. James, I, too, would be greatly disappointed in surface finish data coming from a CMM. I use Zeiss/TSK Surfcoms to do traces of profiles and roughness checks. But, this was a GD&T question anyway, not a CMM question...