As part quality has gone up, it has become essential to provide not only the most complete dimensional data on a given part, but also other detectable data like simple contamination, porosities, scratches, discolorations, cracks, and other types of potential surface defects... especially in automotive powertrains. In the past, flaw detection has been accomplished using simple visual methods like the naked human eye, or even manual bore scopes using specialized video equipment.
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