Inspection is a plan, not a habit. Deciding which dimensions are verified, on what instrument and how often is what makes a result repeatable rather than lucky.
Dimensions that carry function are treated as critical: they are measured on a Zeiss CMM and reported. General dimensions follow the drawing's general tolerance and are checked as appropriate — not every dimension needs the same effort.
The inspection plan is agreed before production, based on the drawing and your quality requirements, and stays the same across the batch so results are comparable.
Measured values are recorded, and parts remain traceable to their batch and inspection record — so a question months later has an answer.