ArcGIS Pro 3.0 API Reference Guide
ArcGIS.Core.CIM Namespace / CIMScaleFormat Class / Separator Property

Separator Property (CIMScaleFormat)
Gets or sets the character(s) used to separate '1' from the scale in an absolute scale, e.g ':' in 1:20000.
Syntax
public string Separator {get; set;}
Requirements

Target Platforms: Windows 11, Windows 10, Windows 8.1

ArcGIS Pro version: 2.0 or higher.
See Also