For inspecting the coaxality cylindricity symmetry and shifting of revolution parts Flatness of working surfaceparallelism betweenVslot and bottom surfaceparallelism betweenVslot and side surfacesymmetry betweenVslot&side surfacesquareness betweenVslot &end surfacesquareness between VSlot&bottom surfaceHeight difference of the vslot within a matche pairTYPE(mm) precision grade(um) ...