It appears to be 5.75 inches wide on a 23-inch 1920x1080 LCD screen (at a font size of 110 percent). This image has a width of 5.6 inches on a 19-inch CRT screen with a resolution of 1280x960 pixels. A CRT monitor with a 17-inch, 1024x768-pixel resolution displays it at 6.0 inches. it appears to be 3 inches wide on an iPhone 5S (if held in horizontal orientation).