Page:Practical Treatise on Milling and Milling Machines.djvu/225

Rh INDEX TABLE Plain and Differential Indexing for Divisions from 383 to 1008

Many of these divisions can be obtained by plain indexing and differential indexing, using the gears furnished with the machines. By the addition of eight special change gears all divisions from 383 to 1008 may be indexed.

The special change gears required have the following numbers of teeth: 46, 47, 52, 58, 68, 70, 76, 84.