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With progeCAD, you typically draw at full-size (1:1 scale), and then set a scale factor when you print or plot your drawing. Before you begin drawing, however, you need to determine the relationship between drawing units and real-world units.
For example, you can decide whether one linear drawing unit represents an inch, a foot, a meter, or a mile. In addition, you can specify the way the program measures angles. For both linear and angular units, you can also set the degree of display precision, such as the number of decimal places or smallest denominator used when displaying fractions. The precision settings affect only the display of distances, angles, and coordinates. progeCAD always stores distances, angles, and coordinates using floating-point accuracy.
The field above this setting shows an example of the linear unit type at the current precision.
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The field above this setting shows an example of the angular unit type at the current precision.
For example, by default, angle 0 is at the "three o'clock" or "east" position.
The adjacent icon shows the current location of the angle base.
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