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Item _array_structure_list_axis.angular_pitch

Description

               The pixel-centre-to-pixel-centre distance for a one step
               change in the setting of the specified axis in millimetres.

               This is meaningful only for 'constant velocity' spiral scans,
               or for uncoupled angular scans at a constant radius
               (cylindrical scan) and should not be specified for cases
               in which the angle between pixels, rather than the distance
               between pixels is uniform.

               See '_array_structure_list_axis.angle_increment'.

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