Thinking Metric

'"Thinking Metric, 3rd Edition", teaches you how to think in metric units directly, without converting, by using your own body and familiar objects as references. Memory aids make the learning easier, and rules-of thumb help you make approximate conversions to metric units.... A special chart directs you to sections which apply to you, and lets you bypass the rest." Practice problems and self-tests occur throughout. A 150 page, paperback designed to ease your way into "metrification" and comfortable compliance with federal regulations on purchasing initiated in 1992.