ArcGIS Pro 3.0 API Reference Guide
ArcGIS.Core.CIM Namespace / CIMContouringEffect Class / Thickness Property

Thickness Property
Gets or sets the thickness of the contour lines measured in meters or points depending on the value of UseRealWorldSizeThickness.
Syntax
public double Thickness {get; set;}
Requirements

Target Platforms: Windows 11, Windows 10, Windows 8.1

ArcGIS Pro version: 2.9 or higher.
See Also