This lively four-book series from Chrysalis Education explores how we measure things and why we measure them the way we do. An entertaining combination of cartoon-style illustrations, photographs, and diagrams explains today's--and yesterday's--standard units of measurement.
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22 yards accuracy arms outstretched Babylonian cubit Callipers century Charles-Maurice de Talleyrand chih circumference Contour lines cubit sticks customary and imperial decimeter defined digit distances of space divided Egyptian elbow Emperor equal Europe fathoms feet 3 meters feet and inches Folding rulers French French Revolution furlongs Greek Gunter's chain imperial unit l00 centimeters l2 feet l2 inches league light waves long lengths measure cloth measure distance measure lengths measure more accurately measured in miles measuring land measuring units meter long metric system metric units micrometer Middle Ages middle finger miles or kilometers millimeters multiply name comes nanometer nautical mile object old English old unit palm parsec perimeter pole radar scale shusi Sometimes called sonar standard meter standard units Stonemasons thumb with fingers trade travels Trundle wheels U.S. customary units units of length units of length.The width yards 5 meters yards about 20l yardstick