Sometimes when I checked the relation of two axes, SW gave me 'The two selected items are perpendicular to each other. The selected items intersect' which is what I want. However, other times it gave me 'The two selected items are perpendicular to each other. Distance: 0.00mm, Delta X: 0.00mm, Delta Y: 0.00mm, Delta Z: 0.00mm' or 'Angle: 90deg, The selected items intersect.' What is the reason for the different answers? Does it mean if I get any of the two latter answers, the two axes are not as perpendicular and intersect as in the first case?