Change Gear Table
Metric Threads Using 21 Tooth Gear
Metric Thread (MM)	A	B	C	D	Actual	% Error
0.5	60	50	21	80		0.0125
0.75	35	57	50	65		0.0225
1	60	40	21	50		0.0125
1	21	30	45	50	1.0000	0.0125
1.25	60	20	21	80		0.0125
1.5	40	50	65	55		0.0606
1.75	40	35	55	57		0.0358
2	21	30	45	25	2.0000	0.0125
3	21	20	45	25	3.0000	0.0125
4	21	20	60	25	4.0010	0.0125
5	21	20	60	20	5.0010	0.0125
6	65	25	80	55	6.0036	0.0606
7	57	40	65	21	7.0020	0.0287
8	57	20	80	45	8.0433	0.5387
9	55	30	65	21	9.0084	0.0936
10	55	21	60	25	9.9786	0.2147
11	65	30	80	25	11.0067	0.0606
12	57	20	80	30	12.0650	0.5387
13	57	20	60	21	12.9268	0.5664
14	57	20	65	21	14.0040	0.0287
15	80	21	50	20	15.1190	0.7874
16	80	21	80	30	16.1270	0.7874
17	80	20	80	30	16.9333	0.3937
18	57	20	80	20	18.0975	0.5387
19	60	20	80	20	19.0500	0.2825
24	80	20	80	21	24.1905	0.7974