EN ISO 9606_1 141 T FW FM5 S t3 D48_3 PB slEN ISO 9606_1 135 P FW FM5 S t10 PB mlEN ISO 9606_2 131 T FW 23 t2 D50 PB slEN ISO 9606_1 135 P FW FM1 S t10 PF mlEN ISO 9606_2 131 T FW 23 S t3 D50 PB sl