1/2
13|20
0.52
0.48
0.875
0.855
5/8
11|18
0.647
0.603
1.0625
1.0375
3/4
10|16
0.774
0.726
1.25
1.225
7/8
9|14
0.901
0.849
1.4375
1.4075
1
8|12
1.028
0.972
1.625
1.595
1-1/8
7|12
1.15
1.095
1.8125
1.7825
1-1/4
7|12
1.282
1.218
2
1.955
1-3/8
6|12
1.409
1.341
2.1875
2.1425
1-1/2
6|12
1.536
1.464
2.375
2.33
1-3/4
5
1.79
1.71
2.75
2.69
2
4.5
2.044
1.956
3.125
3.065