Page:Practical Treatise on Milling and Milling Machines.djvu/249

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TABLE OF LEADS, 20.20″ TO 24.55″

	DRIVEN	DRIVER	DRIVEN	DRIVER
LEAD IN INCHES	GEAR ON WORM	1ST GEAR ON STUD	2nd GEAR ON STUD	GEAR ON SCREW
20.20	72	28	44	56
20.35	100	32	56	86
20.36	64	40	56	44
20.41	100	28	32	56
20.42	56	24	28	32
20.43	72	32	40	44
20.48	86	48	64	56
20.48	86	28	48	72
20.48	86	24	32	56
20.57	72	40	64	56
20.57	72	28	32	40
20.63	72	32	44	48
20.63	72	24	44	64
20.74	64	24	56	72
20.78	64	28	40	44
20.83	100	32	48	72
20.83	100	24	32	64
20.83	100	24	28	56
20.83	100	24	24	48
20.90	86	32	56	72
20.90	86	24	28	48
20.93	100	40	72	86
20.95	64	28	44	48
20.95	64	24	44	56
20.95	44	24	32	28
21.00	56	32	48	40
21.00	72	40	56	48
21.00	72	24	28	40
21.12	86	32	44	56
21.12	86	28	44	64
21.21	56	24	40	44
21.32	100	24	40	44
21.33	100	56	85	72
21.33	64	24	32	40
21.39	44	24	28	24
21.39	56	24	44	48
21.43	100	40	48	56
21.43	72	28	40	48
21.43	72	24	40	56
21.43	48	28	40	32
21.43	100	28	24	40
21.48	100	32	44	64
21.50	86	24	24	40
21.82	72	44	64	48
21.82	100	28	44	72
21.82	64	32	48	44
21.82	56	28	48	44
21.88	100	40	56	64
21.88	100	32	28	40
21.90	86	24	44	72
21.94	86	28	40	56
21.99	86	44	72	64
22.00	64	32	44	40
22.00	48	24	44	40
22.00	56	28	44	40
22.04	72	28	48	56
22.11	86	28	72	100
22.22	100	40	64	72
22.22	40	24	32	24
22.22	64	24	40	48
22.32	72	24	64	86
22.32	100	32	40	56
22.32	100	28	40	64
22.34	86	44	64	56
22.34	86	28	32	44
22.40	86	32	40	48
22.40	86	24	40	64
22.50	72	24	40	64
22.50	72	24	24	32
22.50	72	28	56	64
22.73	100	24	24	44
22.80	86	48	56	44
22.80	86	24	28	44
22.86	64	24	24	28
22.86	48	24	32	28
22.86	64	24	48	56
22.91	72	44	56	40
22.92	100	40	44	48
22.92	44	24	40	32
22.93	86	24	64	100
23.04	86	56	72	48
23.04	86	32	48	56
23.04	86	28	48	64
23.04	86	28	24	32
23.14	100	24	40	72
23.26	100	32	64	86
23.26	100	28	56	86
23.26	100	24	48	86
23.33	64	32	56	48
23.33	48	24	28	24
23.33	64	24	28	32
23.38	72	28	40	44
23.44	100	48	72	64
23.44	100	32	48	64
23.45	86	40	48	44
23.52	86	32	56	64
23.57	72	28	44	48
23.57	72	24	44	56
23.57	48	28	44	32
23.81	100	48	64	56
23.81	100	28	48	72
23.81	100	28	32	48
23.81	100	24	32	56
23.89	86	32	64	72
23.89	86	24	48	72
23.89	86	24	32	48
24.00	64	40	72	48
24.00	72	24	32	40
24.00	56	28	48	40
24.00	64	32	48	40
24.00	100	56	86	64
24.13	86	28	44	56
24.19	86	40	72	64
24.24	64	24	40	44
24.31	100	32	56	72
24.43	86	32	40	44
24.43	44	24	32	24
24.44	44	24	32	24
24.44	64	24	44	48
24.54	72	32	48	44
24.54	72	32	48	44
24.55	100	32	44	56