A.0.02,0.05~0.07 B.0.03,0.O5~0.07 C.0.05,0.O5~0.07 D.0.03,0.05~0.09
(A)0.60 (B)0.45 (C)0.30 (D)0.10
(A)0.02~0.03mm (B)0.02~0.04mm (C)0.02~0.05mm (D)0.02~0.06mm