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Chapter 8. Interactive Features > Measurement Properties

8.8. Measurement Properties

PDF documents, such as those created by CAD software, may contain graphics that are intended to represent real-world objects. Users of such documents often require information about the scale and units of measurement of the corresponding real-world objects and their relationship to units in PDF user space.

This information enables users of viewer applications to perform measurements that yield results in the units intended by the creator of the document. A measurement in this context is the result of a canonical function that takes as input a set of n coordinate pairs


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