Order No | Dimension(mm) | Flatness of working surface(μm) | Parallelism between V slot&bottom surface(μm) | Parallelism between V slot&side surface(μm) | symmetry between V slot & two sides surface(μm) | perpendicularity between V slot & two sides surface(μm) | perpendicularity between sides surface & and surface(μm) | Height difference of the V slot within amatched pair (μm) |