Small Multiples

The principle of small multiples was introduced by Edward Tufte. They are a series of small similar pictures, making a point through repetition. The repetition visually shows comparisons of changes and differences among objects.

Here are a few examples.

In the graphic below, the designer used small multiples to compare portable systems. Although it's hand drawn the differences are obvious.

In the next example, small multiples were repeated but color was used to show percentage. 

For design complications this technique could solve a lot of problems.