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AutoCAD® 2012 & AutoCAD LT® 2012 Bible by Ellen Finkelstein

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Chapter 5: Setting Up a Drawing

In This Chapter

Determining the unit type Setting the drawing size Working with drawing scales Adding a titleblock Understanding system variables

Often, the first step after you start a new drawing is to set its size and unit type. These and other setup options are discussed in this chapter. The entire process of setting up a drawing is essential for ensuring accurate results. You can save most of these settings in a template to avoid having to re-create them each time you start a new drawing.

Choosing Unit Types

One of the first tasks in setting up a drawing is to choose the unit type. Units define how objects are measured. You can save the unit type in a template.

The coordinates that you use in AutoCAD or AutoCAD LT are measured in units that can represent any real-world measurement, such as inches or millimeters. A surveyor or city planner might even use miles or kilometers as the base unit. However, different disciplines have customs that express units differently, and you should use the unit type appropriate for the type of drawing you're creating. This ensures that everyone involved understands the drawing. AutoCAD and AutoCAD LT offer five types of units, as shown in Table 5.1. The sample measurement column shows how a line 32.5 units long would be displayed in the various unit types.

Notice how the engineering and architectural units translate a line of 32.5 units into feet and inches (when using Imperial measurements). Engineering and ...

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