Centres

0.2 mm

0.3 mm

0.4 mm

0.5 mm

0.6 mm

0.7 mm

0.8 mm

0.9 mm

1 mm

1.1 mm

1.2 mm

1.4 mm

1.5 mm

1.6 mm

1.8 mm

2 mm

2.2 mm

2.5 mm

3 mm

4 mm

4.5 mm

5 mm

6 mm

6.5 mm

7 mm

7.5 mm

8 mm

9 mm

10 mm

11 mm

12 mm

13 mm

14 mm

15 mm

16 mm

17 mm

18 mm

19 mm

20 mm

21 mm

22 mm

23 mm

24 mm

25 mm

26 mm

27 mm

28 mm

30 mm

32 mm

33 mm

34 mm

35 mm

36 mm

37 mm

38 mm

39 mm

40 mm

41 mm

42 mm

43 mm

45 mm

48 mm

50 mm

52 mm

53 mm

55 mm

60 mm

62 mm

63 mm

65 mm

68 mm

70 mm

72 mm

74 mm

75 mm

82 mm

85 mm

90 mm

95 mm

100 mm

105 mm

110 mm

115 mm

130 mm

160 mm

180 mm