1 2 3 6 4 2 7 8 3 5 1 4 5 6 9 10 9 0.5 – 1 mm 11 7 8 9 14 12 13 10 11 12 15 17 16 2 000Book_CS33EB_WE.indb 2 2010/11/30 11:09:29