Page:Practical Treatise on Milling and Milling Machines.djvu/253

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TABLE OF LEADS, 75.00″ TO 149.31″

	DRIVEN	DRIVER	DRIVEN	DRIVER
LEAD IN INCHES	GEAR ON WORM	1ST GEAR ON STUD	2nd GEAR ON STUD	GEAR ON SCREW
75.00	100	24	72	40
76.39	100	24	44	24
76.79	100	28	86	40
80.00	72	24	64	24
80.36	100	28	72	32
80.63	86	24	72	32
81.44	100	24	72	32
81.90	86	24	64	28
83.33	100	24	64	32
83.33	100	24	56	28
83.33	100	24	48	24
83.61	86	24	56	24
89.59	100	24	86	40
92.14	86	24	72	28
93.75	100	24	72	32
95.24	100	24	64	28
95.56	86	24	64	24
95.98	100	28	86	32
97.22	100	24	56	24
107.14	100	24	72	28
107.50	86	24	72	24
111.11	100	24	64	24
111.98	100	24	86	32
125.00	100	24	72	24
127.98	100	24	86	28
149.31	100	24	86	24