esk.Revit.DB.CylindricalHelix" target="_blank" rel="noopener noreferrer">Autodesk.Revit.DB.CylindricalHelix</a><br />Revit helix to convert.</dd></dl><h4 class="subHeading">Return Value</h4>Type: <a href="https://developer.rhino3d.com/api/RhinoCommon/html/T_Rhino_Geometry_Curve.htm" target="_blank" rel="noopener noreferrer">Rhino.Geometry.Curve</a><br />Rhino curve that is equivalent to the provided Revit helix.<h4 class="subHeading">Usage Note</h4>In Visual Basic and C#, you can call this method as an ins