IN THIS CHAPTER
Determining the unit type
Setting the drawing size
Working with drawing scales
Adding a title block
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 recreate them each time you start a new drawing.
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 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.
Table 5-1. Unit Types
Number of units, partial units in decimals
Feet and inches, partial ...