public double BeltMeasurement { get; set; }

Public Property BeltMeasurement As Double
	Get
	Set

public:
property double BeltMeasurement {
	double get ();
	void set (double value);
}

On a conical surface, the distance between the radial gridlines is not constant. To interpret the Distance property, a circumferential gridline is taken as the "belt." Distance is then measured along the belt. The BeltMeasurement property gives the location of the belt relative to the extremes of the surface. The belt is used whenever gridlines are not parallel. It defaults to 0.5.