To measure eighths on a ruler, Công ty xây dựng merely look at every 2 1/16th-inch tick mark. Rigorously align the 0-centimeter mark on the edge of the object you wish to measure. Alternatively, you should use the inch facet of your ruler to measure an object and convert it to centimeters. Now, locate the top of the object and see which centimeter and millimeter tick mark it reaches. The next chart will describe the millimeter and centimeter equivalents of inch fractions. Those smaller ticks are millimeter (10 millimeters equals 1 centimeter).