This Measurement Worksheet is great for practicing reading a Rain Gauge to measure rain fall. You may select inches or centimeters for the problems. The measurement worksheet will produce fifteen problems per page.
The liquid surface is curved (U-shaped) rather than horizontal due to the relatively strong attractive force between water and glass. (The curved surface is called the meniscus.)
As a general rule, the bottom of the meniscus is taken as the liquid level in the cylinder
(and any other liquid volume measuring device).