•See the picture below of untreated parts that clearly shows the different surfaces.
•But clearly evident that line is merged during polishing to remove the step over in the picture sent by you.
•Theoretically  first line ( showing by blue ) should be extend to second line ( showing by red ).
•But difference between these two surfaces is hardly 0.020mm.
•If we assume that, removed the line of two surfaces in that case also profile of the surface measures within limit.
•See attached report and screen shot for previously supplied part and found within limit.
