Measurement and Sketching Terms

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Accuracy

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The extent to which a given measurement agrees with the standard value for that measurement.

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Precision

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The degree to which the correctness of a quantity is expressed.

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Dial Caliper

Back

A precision measuring device used to measure linear dimensions, thickness, or diameter.

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Dimension

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Measurement in length, width, and depth.

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Unit

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A specified amount of something measured, allowing for standard measurements.

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Surface Area

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The total area of the surface of a three-dimensional object.

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Volume

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The amount of space, measured in cubic units, that an object or substance fills.

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Isometric Sketch

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A sketch in which an object's parallel edges are drawn with parallel lines, typically at 30-degree angles to the horizontal baseline.

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Multiview Sketch

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A sketch typically including three primary views of an object using orthographic projections.

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Orthographic Projection

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A method of representing views of a three-dimensional object by projecting the visible faces in each view onto a two-dimensional plane.