FILENAMES:

Indexing_Pin.jpg
Compound_Indexing_Error.gif

DESCRIPTION:

These are images showing indexing head dividing error issues. 

Posted by Bill Cook <skytop19@worldnet.att.net>.  

The following description was provided:

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Compound Indexing Error.gif - explains compound indexing and use of the
 chart in The Machinery's Handbook. Also, there is an error calculation for
 a division (51) that doesn't come out even.

Compound Indexing Pin.jpg - shows a second pin required for compound
 indexing. This pin engages the holes in the outer dividing circle on the
 plate. In use, the plate is moved a specified number of holes with the
 crank index pin engaged in it's circle.

Bill Cook