3/16	1/4	3/8	1/2	5/8	3/4	7/8	1	1 1/4	1 1/2	1 3/4	2	2 1/2	3	4
4.8	6.3	9.5	12.7	15.9	19	22.2	25.4	31.8	38.1	44.5	50.8	63.5	76.2	101.6