You might also see the stud referred to by other
names, such as module, dot, or fundamental LEGO unit
(FLU). The letter L is used to indicate length in studs. For
example, a 6.5L shock absorber is 6.5 studs long.
LEGO builders generally measure the height of their
creations, however, in terms of the height of a brick or plate.
For example, we say that something is one brick tall or one
plate tall. Note that one brick tall is equal to 9.6 mm, just a
bit more than a stud (see Figure 2-1).
As illustrated in Figure 2-2, LEGO plates are only one third as tall as a brick, meaning that three stacked plates are
the same height as one brick.