Practice Test Geeks(GD&T) Geometric Dimensioning and Tolerancing Certification Practice Test
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Geometric Symbols & Notation Flashcards

7 cards from real GD&T practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Geometric Symbols & Notation flashcards as text

  1. Which GD&T symbol is used to control the orientation of a surface or axis to a datum without controlling its location?

    Answer: Parallelism

    Parallelism controls orientation (angle = 0°) relative to a datum but does not control the feature's location.

  2. The 'all around' symbol in GD&T is represented by:

    Answer: A circle on the bend of the leader line

    A circle placed at the bend of the leader line indicates the profile tolerance applies all around the cross-section.

  3. What does the symbol 'Ø' placed before a tolerance value in a feature control frame indicate?

    Answer: The tolerance zone is cylindrical

    The diameter symbol (Ø) before a tolerance value specifies a cylindrical (3D) tolerance zone rather than two parallel planes.

  4. A free state variation symbol in GD&T is depicted as:

    Answer: A circled F

    The circled F modifier indicates that the tolerance applies to the part in its free (unrestrained) state.

  5. Which symbol indicates that a feature of size must be at its maximum material condition boundary?

    Answer: Circled M

    The circled M (MMC modifier) in a feature control frame means the stated tolerance applies when the feature is at its maximum material condition.

  6. The 'between' symbol in GD&T notation is used to indicate:

    Answer: A tolerance applies between two specified points

    The 'between' symbol (↔) specifies that a tolerance zone is limited to the area between two identified points on a feature.

  7. In a feature control frame, what does a datum reference letter enclosed in a box signify?

    Answer: It is a datum feature symbol identifying a reference plane or axis

    A letter inside a square box in the feature control frame (or standalone) identifies a datum feature from which measurements are taken.

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