Gear Cutting (Without Index Plates) Tables

Do accurate gear cutting (or other circle dividing) up to 100 teeth (or divisions) on your rotary table without use of expensive index plates.  (For the folks who do not have computers to do the calculations!)

Tables of direct dial settings calculated to 18 decimal places and are accurate to 1 second of arc, which is only 1/3600th degree!  There are no cumulative errors as you cut gears or divide circles. You could calculate these yourself, but for just a 26 tooth gear you will have to make 78 calculations and hope that they are all correct!  Degrees, minutes and seconds are needed for each tooth.  If your rotary table dial doesn't include seconds, just round them to the nearest 1/4 or 1/2 degree.

As an example, here are the dial settings from the table to cut a 26 tooth gear. Would you want to use a calculator to do this?

The tables include the direct dial settings for every gear from 8 to 100 teeth, plus tables of gear pitch diameters for 14 pitches in a range from 6 to 120. Also, there are formulas and examples to calculate various other aspects of gears.

Gear tables - 25 pages.