Mechanical Engineering Concepts

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Orthographic Projection

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A method of representing three-dimensional objects in two dimensions, using multiple views.

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Reduction Scale

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A scale used to represent an object at a smaller size than its actual dimensions.

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Definition: A font with straight edges.

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Sans Serif

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

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Orthographic Projection

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A sectional drawing based on a cutting plane line that extends completely through an object.

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Full Section View

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Dimensioning from a single point of origin which reduces dimensional deviations in manufactured parts because each size/location dimension is referenced to a single point.

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Datum Dimensioning

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A thin plate with holes usually of several sizes used to confine an erasure to a limited area.

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Erasing Shield

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Revised set of drawings submitted by a contractor upon completion of a project or a particular job. They reflect all changes made in the specifications and working drawings during the construction process, and show the exact dimensions, geometry, and location of all elements of the work completed under the contract.

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As Built View

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Exploded View

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A view that shows the components of a mechanical part separated along an axis.

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Broken View

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A view that shows a mechanical part as if it were broken to reveal internal features.