AUTO CAD LT 2009 TUTORIAL

1. Starting Up AutoCAD LT 2009

Select the AutoCAD LT 2009 option on the Program menu or select the AutoCAD LT 2009 icon on the Desktop. Once the program is loaded into memory, the AutoCAD LT 2009 drawing screen will appear on the screen.

-Note that AutoCAD LT automatically assigns generic names, Drawing X, as new drawings are created. In our example, AutoCAD LT opened the graphics window using the default system units and assigned the drawing name Drawing1.

Drawing Units Setup
Every object we construct in a CAD system is measured in units. We should determine the value of the units within the CAD system before creating the first geometric entities.

1. In the Menu Browser, select: [Format] --> [Units]


2. In the Drawing Units dialog box, set the Length Type to Decimal. This will set the measurement to the default English units, inches.

 3. Set the Precision to two digits after the decimal point

Drawing Area Setup

Next, we will set up the Drawing Limits; setting the Drawing Limits controls the extents of the display of the grid. It also serves as a visual reference that marks the working area. It can also be used to prevent construction outside the grid limits and as a plot option that defines an area to be plotted/printed. Note that this setting does not limit the region for geometry construction.

1. In the Menu Browser, select: [Format] --> [Drawing Limits]


2. In the command prompt area, near the bottom of the AutoCAD LT drawing screen, the message “Reset Model Space Limits: Specify lower left corner or [On/Off] <0.00,0.00>:” is displayed. Press the Enter key once to accept the default coordinates <0.00,0.00>.

3. In the command prompt area, the message “Specify upper right corner <12.00,9.00>:” is displayed. Press the ENTER key again to accept the default coordinates <12.00,9.00>.

4. On your own, move the graphic cursor near the upper-right comer inside the drawing area and note that the drawing area is unchanged. (The Drawing Limits command is used to set the drawing area; but the display will not be adjusted until a display command is used.)

5. In the Menu Browser, select: [View] --> [Zoom] --> [All]

The Zoom All command will adjust the display so that all objects in the drawing are displayed to be as large as possible. If no objects are constructed, the Drawing Limits are used to adjust the current viewport.