6-16 Scanning Chapter 6Displaying RulersTo work precisely with a preview image, you can display rulers on the topand left borders of the preview area. The rulers display based on what youhave set as the unit of measure on the Main tab.To display rulers:On the toolbar, click Rulers.Adjusting the Selection SizeWhen you first preview an image, the selection size is the same as yoursource document paper size.You can adjust the selection size of an image in order to isolate a specificarea of the image for a more selective preview scan. For example, inscanning a letter, you may want to isolate and save a company logo byitself, ignoring the rest of the letter.You define the selection size of your image by drawing a border around thepart of the image that you would like to isolate. Alternatively, you candefine and orient the dimensions of the selection with respect to the upperleft corner of the preview area. Regardless of how you define a selection,you can easily and quickly change its dimensions.In defining the selection size, regardless of the method you select, you canmaintain the current height and width proportions of the image.For example, you set the width to 4 inches and the height to 6 inches. Youchange the width to 5 inches. If Keep Proportions is not selected, the heightremains the same. Thus, the proportion of the page height and widthchanges. If Keep Proportions is selected when you change the width, theheight automatically changes. The lock icon indicates that the page sizewill be maintained in the same proportion whenever you change either thewidth or the height.To adjust the selection size:1. Click the Main tab.
