          Helium help : Comprehensive list of report parameters    Diameters, Width & Length        Applicable to: The model`s diameter is measured in 360 directions with the step of 0.5 degrees, because opposite directions apply to the same diameter. The diameter of the model in some given direction is measured as a distance between two parallel vertical planes placed perpendicularly to the given direction as close to each other as possible, so that all vertices of the model lay between these planes. The minimum, maximum and average diameters, width and length, diameters perpendicular to minimum and maximum are calculated using this array of values. Brilliant The parameters are calculated for brilliant: Minimum diameter Maximum diameter Average diameter Width - Minimum diameter Length - Maximum diameter Diameter deviation The diameter deviation in millimeters is a mere difference between the maximum and minimum values of the parameter. In addition to this deviation, there is a relative diameter deviation parameter that is calculated by the following formula: (Dmax/Dmin - 1) * 100%. Rounded Fancies / Marquise, Oval, Pear The parameters are calculated for rounded fancies: Maximum diameter Length - Maximum diameter Width - minimum in the direction +/-10 degree perpendicular to Length Minimum diameter Rectangular Fancies / Princess, Radiant The parameters are calculated for rectangular fancies: Minimum diameter Width - Minimum diameter Length - minimum in the direction +/-10 degree perpendicular to Width Maximum diameter StepCuts / Emerald The parameters are calculated for emerald: Minimum diameter Width - Minimum diameter Length - minimum in the direction +/-10 degree perpendicular to Width Maximum diameter StepCuts / Trapezium The parameters are calculated for trapezium: Minimum diameter Length - Girdle side width-based length Width - extreme in the direction +/-10 degree perpendicular to Length Maximum diameter StepCuts / Triangle The parameters are calculated for triangle: Minimum diameter Diameter 1 - Minimum diameter Diameter 2 - extreme in the range +-30 degree in the direction 120 degree from Diameter 1 Diameter 3 - extreme in the range +-30 degree in the direction 120 degree from Diameter 1 Width - Minimum diameter Length - maximum in the direction +/-10 degree perpendicular to Width Unknown cuts The parameters are calculated for unknown cuts: Minimum diameter Width - Minimum diameter Length - extremum (minimum or maximum) in the direction +/-10 degree perpendicular to Width Maximum diameter All parameters that are measured in millimeters have corresponding percentage values. These percents are calculated relative to average diameter for brilliant or width for other cuts.      