So I've seen this book around quite a bit, and I'm looking to purchase a copy. I work in the field of artisanal high end musical instrument making. Most of our equipment is actually quite old in nature (watchmaking lathes, manual/hydraulic tracers, manual taper attachments etc). I took a year of machining courses, and my instructors recommended I find an older edition of this behemoth text since it might be more applicable to my specific field and familiar equipment. My question now is: Should I look into older versions of this book? Or since I'm looking to eventually convert some of my processes to CNC (next 2-4 years for precision turning and milling operations), should I get the most current edition? I apologize if this question has been asked before. If it has, please point me in the right direction, and I'll gladly educate myself. For what it's worth: My materials and end products are very small. I typically work in tenths (0.0001") measurements, and often in metric. I rarely use a screw thread greater than a 2-56 or an M2x.4mm. 00-90 threads are common for me, and O-1 drill rod around .060-0.80" being standard for axles.