The Book is out of print according to Amazon but Praxis still list it at I think around 45 dollars.
You might also find this interesting: http://www.surveyhistory.org/the_dividing_engine.htm This came from a Google search. If you need to divide a circle accurately, Engineers use a clever device called a dividing head which has interchangeable dividing plates and can accurately divide a circle into an almost unlimited combination of divisions. It is an interesting device in it's own right. Also, an engineering lathe with backgears can use these as a dividing machine. By using a stop (or 'dog')which locates into a tooth of the back gear with the motor off and disconnected, allows precise circular location of the lathe spindle in a wide range of circular divisions depending on the gear ratio used between the 'dividing' back gear and the spindle. I am sorry if this is unclear but it is difficult to describe in words. This technique is used to accurately mark the divisions on machine 'adjusting screw collars' in small workshops. There are some very good texts on this subject in the engineering press. If anyone would like a reference email me privately. Terry Quoting Larry McDavid <[EMAIL PROTECTED]>: > Tony, do you know of one for sale? I searched ABE, Amazon and Powell's > without success. > > > > The book in question is: > > > > "Dividing The Circle" ------------------------------------------------ This mail sent through http://webmail.zoom.co.uk -
