Apple MC239LL/A User Manual - Page 63

Display Arrange the display so that the top of the screen is slightly below eye level when you're sitting at the keyboard. The best distance from your eyes to the screen is up to you, although most people seem to prefer 18 to 28 inches (45 to 70 cm). Position the display to minimize glare and reflections on the screen from overhead lights and nearby windows. If possible, use a tiltable display stand. The stand lets you set the display at the best angle for viewing, helping to reduce or eliminate glare from lighting sources you can't move. Shoulders relaxed Forearms and hands in a straight line 18-28 in. (45-70 cm) Top of the screen at or slightly below eye level (You may need to adjust the height of your display by raising or lowering your work surface.) Forearms level or tilted slightly Lower back supported Screen positioned to avoid reflected glare Clearance under work surface Thighs tilted slightly Feet flat on the floor or on a footrest More information about ergonomics is available on the web: www.apple.com/about/ergonomics Chapter 4 Last, but Not Least 63