Hi ERobishaw,
Sorry for the delayed response in getting back to you.
MeasureLineYou can draw measure line using Syncfusion.Windows.Forms.Diagram.MeasureLine class. The following code snippet illustrates this.
[C#]
// Start point
System.Drawing.PointF start = new System.Drawing.PointF(40, 0);
// End point
System.Drawing.PointF end = new System.Drawing.PointF(40, 100);
Syncfusion.Windows.Forms.Diagram.MeasureLine line = new MeasureLine(start, end);
this.diagram1.Model.AppendChild(line);
Sample referencePlease refer the sample that demonstrates the same.
http://websamples.syncfusion.com/samples/Diagram.Windows/F70957/main.htmPlease let me know if this helps you.
Regards,
Jaya