Φ508
Φ339.7
Φ273
Φ244.5
Φ177.8
Φ139.7
Φ127
Φ114.3
Φ101.6
Φ88.9
20"
133/8"
103/4"
95/8"
7"
51/2"
5"
41/2"
4"
31/2"