John Dorr's Regulating w/o specs

[David Boyce]

 If I try regulating without my specs I can't see well enough......


"Greetings,

         Was there an article written by John Dorr in the Journal about 
regulating without specs by using an algebraic formula and key/hammer travel 
measurements? What month's Journal is it in?


Thanks in advance
Julia Gottshall"