DIN 7178-1 Bb.1:1973 System of cone tolerances and cone fits for conical workpieces of cones from C = 1 : 3 to 1 : 500 and lenghts from 6 to 630 mm; methods for testing of internal and external cones
1974DIN 7178-1:1974 System of cone tolerances and cone fits for conical workpieces from C = 1 : 3 to 1 : 500 and lengths from 6 to 630 mm; system of cone tolerances
1973DIN 7178-1 Bb.1:1973 System of cone tolerances and cone fits for conical workpieces of cones from C = 1 : 3 to 1 : 500 and lenghts from 6 to 630 mm; methods for testing of internal and external cones