Similar to how the System.Drawing.Pen is setup, the width of a Pen is measured in generic units, which are then used with the unit type that is set on the underlying graphics object. By default, this unit of measurement is points.
Requirements
Target Platforms: Windows 10, Windows 8.1, Windows 8, Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2