1/2
13|20
0.504
0.464
0.875
0.855
5/8
11|18
0.631
0.587
1.0625
1.0375
3/4
10|16
0.758
0.71
1.25
1.225
7/8
9|14
0.885
0.833
1.4375
1.4075
1
8|12
1.012
0.956
1.625
1.595
1-1/8
7|12
1.139
1.079
1.8125
1.7825
1-1/4
7|12
1.251
1.187
2
1.955
1-3/8
6|12
1.378
1.31
2.1875
2.1425
1-1/2
6|12
1.505
1.433
2.375
2.33
1-3/4
5
1.759
1.679
2.75
2.69
2
4.5
2.013
1.925
3.125
3.065