Length in normalized screen coordinates (-1 to 1) if not tracking, else length in 3D world coordinates. Default is 1. For example, if the application is viewing DICOM data measured in millimeters (mm), then setting length to 100 displays a 10 cm scale bar on screen.

public SoSFFloat length

Public length As SoSFFloat

public:
SoSFFloat^ length

val mutable length: SoSFFloat