[R-390] PTO Test Jig

[Jim Miller]

Someone asked me about the equations for the little spreadsheet I used to
graph the PTO error.  I lost your email.  Send to me again and I will email
an attachment. back to you  Or go back to the web page and click on the link
I added to a sample .xls file  (scroll down to the bottom).  It calculates
expected frequencies at each quarter turn.  Then you have to manually enter
the actual measured frequencies, and it uses the Excel chart function to
plot the differences,  Pretty simple really.