Directions
To read a graduated cylinder, you need to know the value of each tick mark. For example, if there are 10 lines between the numbers 20 and 30, each line measures 1 milliliter. If there are 5 lines between the numbers 20 and 30, then each line measures 2 milliliters. For the example here, each line marks 1 milliliter. This is also indicated by the ratio 1/1 at the top.