| Data type | UserInterface.Control.Diameter |
| Description | The outside diameter of a rotary knob control. |
| Primitive type | Real |
| Dimension | Distance |
| Unit Name | Unit Symbol | Description | Notes |
|---|---|---|---|
| Micrometers | µm | ||
| Millimeters | mm | ||
| Centimeters | cm | ||
| Inches | in | ||
| Rack Units | RU | A rack unit is defined as 1.75 inches. It is used to express the height of equipment mounted in rack mount cabinets. | |
| Decimeters | dm | ||
| Feet | ft | ||
| Yards | yd | ||
| Meters | m | ||
| Kilometers | km | ||
| Statute Miles | mi | ||
| Nautical Miles | nm |