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Set the grid and the snap intervals in the Drafting Settings dialog box by following these steps:

1 Right-click the Snap Mode or Grid Display button on the status bar and choose Settings from the menu that appears.The Drafting Settings dialog box appears with the Snap and Grid tab selected, as shown in Figure 4-4.The Snap and Grid tab has six sections, but the Snap Spacing and Grid Spacing areas on that tab are all you need to worry about for most 2D drafting work.

2 Select the Snap On check box to turn on Snap mode.This action enables default snaps half a unit apart (ten units apart if you’re working with the default metric template).ssss1 Get your drafting settings here! AutoCAD usually has several ways of doing things. You can also click the Snap Mode button on the status bar to toggle snap on and off; the same goes for the Grid Display button and the grid setting. Or you could press the function keys: F7 toggles the grid off and on, and F9 does the same for Snap mode.

3 Enter the snap interval you want in the Snap X Spacing text box.Use the information in the sections preceding these steps to decide on a reasonable snap spacing. If the Equal X and Y Spacing check box is selected, the Y spacing changes automatically to equal the X spacing, which is almost always what you want. Deselect the check box if you want to specify snap spacings that are different vertically and horizontally.