If you found this interesting and are a non-expert, I recommend browsing Foundations of Mechanical Accuracy by Wayne Moore (1970): https://archive.org/details/

If you found this interesting and are a non-expert, I recommend browsing Foundations of Mechanical Accuracy by Wayne Moore (1970): https://archive.org/details/Foundations_of_Mechanical_Accuracy_by_Wayne_R_Moore_1970 https://archive.org/details/Foundations_of_Mechanical_Accura... Manufacturing got down to nanometer precision starting with macroscopic precision visible to the naked eyeball.