Applicable to any cuts except step cuts
The crown height at girdle minima is measured using upper girdle facets. It is measured for each upper girdle facet and then the average,
minimum, maximum and deviation values are calculated. The software finds the highest vertex of the whole model (it is one the vertices of the table) and the lowest
vertex of each upper girdle facet. The height between the found vertices is considered to be the crown height at girdle minima for the given upper girdle facet, as shown
on the figure below.
Comprehensive list of the Helium report parameters:
Measurements are used in different systems and tools: