Metrology terminology in manufacturing: which term refers specifically to the measured size of the finished, produced part as verified by inspection instruments?

Introduction / Context:Drawings specify target dimensions and permissible variation. During inspection, the measured value obtained from calipers, micrometers, or CMM equipment is compared to the specification to determine acceptability.

Given Data / Assumptions:

• There exists a nominal (called out) dimension with tolerances.
• A finished part has been manufactured and measured.
• We seek the correct term for the measured value.

Concept / Approach:Terminology matters. The “actual size” is the measured dimension of the produced feature. “Basic size” is a theoretically exact size used as a starting point for limits and fits. “Dimensioned size” is the value shown on the drawing. “Production size” is imprecise jargon.

Step-by-Step Solution:

Verification / Alternative check:Inspection reports list measured values under “actual” readings; conformance is determined by checking whether these lie within stated limits.

Why Other Options Are Wrong:

• Dimensioned size: the nominal value printed on the drawing, not a measurement.
• Production size: nonstandard term.
• Basic size: theoretical exact size used for establishing limits, not a measured result.

Common Pitfalls:Confusing “actual” with “maximum material condition” or “virtual condition”; those are feature states or boundaries, not measurements.

Final Answer:Actual size