You will be asked to point in the same direction as the lines of the E. Similar charts use the letter C or pictures.

Older charts, as well as those published by the United States government, may use feet or fathoms.

This chart used the graph in the 1989 Surgeon General's Report as its basis.

The chart below shows the most common phonemic transcription romanization used for several different alphabets.

The chart below shows these numbers alongside the names most commonly used for their positions.

The chart uses a wide variety of measurements to quantify performing artists' buzz across multiple platforms.

These charts also list other frequencies not specifically part of the "business band" but commonly used by businesses.

Some psychrometric charts use dry-bulb temperature and humidity ratio coordinates.

The traditional Snellen chart uses 10 different letters.