How to select a unit system?

By default, size parameters are presented as a ratio of the corresponding value to the diameter. In some situations, other units, e.g. millimeters, can be more useful. The user can choose measurement units for each particular parameter. To do this, point the mouse cursor to the parameter value and click right mouse button. A menu appears, allowing to see available units and select one of them:

The menu above was produced by pointing the mouse to the value of Girdle thickness parameter and pressing the right mouse button. A check mark shows that the current unit of measurement is percents of the diameter. If millimeters are selected from the menu, a value will be recalculated and shown in a new format.

When values of parameters are entered from the keyboard, units of measurement can be specified along with values. When a string like "1.1 %" or "0.02 mm" is typed, DiamCalc recognizes what is the value and what is the unit of measurement and change them if needed. If only a number is typed, DiamCalc applies the current unit of measurement.