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Working with Rulers

Photoshop uses several measuring systems—among them are the ruler bars. Ruler bars are located on the top and left sides of the active document window, and serve several purposes. They let you measure the width and height of the active image, they let you place guides on the screen to control placement of other image elements, and they create markers that follow your cursor as you move. In all, Rulers serve a very important role. Ruler guides help you correctly align image design elements. As a matter of fact, if you're not working on a flat glass monitor, the curvature of the monitor can give you a false impression of the vertical and horizontal. By using guides you have access to precise alignment systems. To use the Ruler guides, the ruler bars must first be visible.

Change Ruler Options

Click the Edit (Win) or Photoshop (Mac) menu, point to Preferences, and then click Units & Rulers.

Select Ruler measurements and Type from the available options.

Click OK.

IMPORTANT If the Rulers are not visible in the active document, click the View menu, and then click Rulers.


PREVIEW

                                                                          

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