working units - Intergraph Smart Interop Publisher - Help

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Smart Interop Publisher Version
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Working units are coordinate units that correspond to the position and definition of a point in a model. There are a fixed number of points on each axis of a model. The idea in establishing working units is to make sure that the objects that you want to draw can be entered with adequate precision, and at the same time fit in the design plane.

Working units include Master Units (the largest unit in use in a design), Sub Units (a portion of a Master Unit), and Positional Units (a portion of a Sub Unit). Positional Units are the smallest degree of accuracy possible in your design. Working units are usually referred to as MU:SU:PU.