CMfGA Blueprint Reading Vocabulary

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American Society Of Mechanical Engineers

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ASME. An organization that publishes technical materials and sets industrial and manufacturing standards. Provides written standardization for blueprints.

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Arc

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A curved feature representing a portion of a circle. Represents a curve or portion of the circumference of a circle.

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Broken-Out Section View

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A section view that removes a small portion of the part exterior to reveal features beneath. Used to highlight small details.

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Center Line

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A line used to define the midpoint of a cylindrical or symmetrical feature or part. Consists of alternating long and short dashes.

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Cutting Plane Line

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A line in a blueprint representing the path of an imaginary cut to form a sectional view, made up of a long dash followed by two short dashes.

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Decimals

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A number representing a portion of a whole, indicated by values to the right of a decimal point.

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Dimension Line

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A line used to define the measurement of a part feature, consisting of a solid line with arrows at both ends.

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Dimensions

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The desired measurement of a feature on a part, listed as a unit.

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Full Section View

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A section view where the part is cut entirely in half, showing the left side cut-side up.

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Functionally Complex

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Able to perform a specific task efficiently, allowing for the creation of parts that perform tasks immediately after being built.