Designed to eliminate the confusion and strain of reading your typical ruler. On the SAE side the 1/4 1/8 and 1/16 increments appear in a vivid white on a high-contrast vibrantly colored background; and on the metric side the millimeter increments appear in a vivid white on a high-contrast black background making this ruler easier to use than others in the market. The ruler s non-glare surface also helps you take a quick and easy measurement.