- Marking processes drift from nominal settings ultimately leading to unreadable marks
- Verification is a metrology tool to ensure consistent mark quality
- Verifier can tell not only that mark is readable but also how close it is to edge of readability
- Analogy: Inspection vs. SPC (Statistical Process Control)
- Verification allows adjusting marking process before bad marks are made
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Examples of Direct Part Marking Problems
Evaluation of
Mark Quality
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