GRADE 8

		Single line	Double line	Double line	Double line	Triple and quadruple lines	Triple and quadruple lines	Triple and quadruple lines

mm	pulg.	Vertical	30º	45º	60º	30º	45º	60º
6.3	7/32	1.1	1.9	1.6	1.1	2.9	2.3	1.7
8	5/16	2	3.5	2.8	2	5.2	4.2	3
10	3/8	3.2	5.5	4.5	3.2	8.3	6.8	4.8
13	1/2	5.4	9.4	7.6	5.4	14	11.5	8.1
16	5/8	8.2	14.2	11.6	8.2	21.3	17.4	12.3
20	3/4	12.8	22.2	18.1	12.8	33.3	27.2	19.2
22	7/8	15	26	21.2	15	39	31.8	22.5
26	1	21.2	36.7	30	21.2	55	45	31.8
32	1-1/4	31.5	55	45	31.5	82	67	47