Engineering Definition
Feature Control Frame (FCF)
The rectangular GD&T callout that defines a geometric characteristic, tolerance, modifiers and datum references.
Why it matters
Reading the feature control frame correctly is essential for setup, inspection and acceptance decisions.
Related technical topics
Technical Literacy · Intermediate
Geometric Dimensioning and Tolerancing (GD&T)
Understand how GD&T communicates allowable geometric variation using datums, feature-control frames and standardized controls for form, orientation, location and runout.
Technical Literacy · Foundational
Engineering Drawings and Blueprints
Learn how industrial drawings communicate geometry, dimensions, tolerances, materials, finishes, assembly relationships and revision-controlled requirements.
Metrology & Quality · Intermediate
Coordinate Measuring Machines (CMMs)
Understand CMM fundamentals, probing, alignment, datum establishment and how inspection programs translate drawing requirements into measured results.