Foundations of mechanical accuracy

I would call this book a vital reference for anyone interested in what it takes to be precise, especially machinists and engineers. This is an excellent discussion of the fundamentals and practices of achieving exceptional mechanical accuracy and only really shows its age through the intense use of US Customary units. There is a reason a mechanical coordinate machine still serves as one of the most mechanically accurate systems for measuring in the world, and this book will help you understand why.