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What Is The Difference Between A Dimension Line And An Extension Line? [Solved]

Dimension lines serve to illustrate the orientation and extent of specified length or size. If there is room for the line and the arrowhead, it is preferred that dimension lines be placed between the extension lines. Extension lines are used to clarify the points at which a dimension begins and ends.

Extension Lines

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Detail of dimension line , Extension line and leader command (GD&T)

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Editing Dimension and Extension Lines

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