Data type: numb
May appear in a looped list containing '_exptl_crystal_id'
Enumeration range: 0.0 -> infinity
Units: mm ( millimetres)
The maximum, medial and minimum dimensions in millimetres of the crystal. If the crystal is a sphere then the *_rad item is its radius. If the crystal is a cylinder then the *_rad item is its radius and the *_length item is its length. These may appear in a list with _exptl_crystal_id if multiple crystals are used in the experiment.