 D      D1   H
(8      12   8)
(10     15   8)
(12     17   8)
(15     20   8)
(16     20   8)
(20     25   8)
(25     30   8)
(30     35   8)
(35     40   8)

(12.70  19.1 6.4)
(15.875 22.2 6.4)
(19.05  25.4 6.4)
(25.4   30.4 6.4)

(12     20   7)
(16     22   7)
(20     26   8)
(25     32  10)
(32     40  10)