Observe the much simpler metric rulers. Within the first centimeter alone every line from 0 would equal the following. Hhs Woods And Engineering Drawing Ruler Interesting Information Tutorial Each foot is broken down into inches. . The smallest lines in between inch markers on a ruler represent 116 of an inch. The small lines halfway between each 18 of an inch denote 116 of an inch. The smaller but still prominent line between the 12 mark and the numbered inch line is 14 inch. You will need a ruler or tape measure that can measure 116. Youll know its an inch ruler because it will have 12 lines that denote inches on the ruler. Up to 25 cash back A standard ruler - one that measures feet and inches instead of meters centimeters and millimeters - breaks down each inch into fractions of an inch. The smallest unit a metric ruler can measure is 1 mm or 01 cm. The shortest of lines are the 18-inch or the 116-inch...