Size	s		e	L	l
	max	min	max-min
2.5	2.5	2.46	2.82-2.75	56	18
3	3.0	2.96	3.39-3.31	63	20
4	4.0	3.95	4.53-4.44	70	25
5	5.0	4.95	5.67-5.58	80	28
6	6.0	5.95	6.81-6.71	90	32
8	8.0	7.94	9.09-8.97	100	36
10	10.0	9.94	11.37-11.23	112	40
12	12.0	11.89	13.65-13.44	125	45
14	14.0	13.89	15.93-15.70	140	56
17	17.0	16.89	19.35-19.09	160	63
19	19.0	18.87	21.63-21.32	180	70
22	22.0	21.87	25.05-24.71	200	80
24	24.0	23.87	27.33-26.97	224	90
27	27.0	26.87	30.75-30.36	250	100
32	32.0	31.84	36.45-35.98	315	125
36	36.0	35.84	41.01-40.50	355	140

                                               Mark : All data based on GB standard and mm unit .