Look into the changes wrought by Henry Maudslay. He changed the world from one where a single threaded screw took a week's work by an apprentice, to one where y

Look into the changes wrought by Henry Maudslay. He changed the world from one where a single threaded screw took a week's work by an apprentice, to one where you could make them with a lathe. He changed the best tolerance from a 10th of an inch to a 10,000th of an inch. He's best known for the first practical screw cutting lathe. Also see the 3 plate method of Whitworth, who made it possible to make accurate flat surfaces. Also see the work of Carl Edvard Johansson, the Gage Block system. Without it, Ford couldn't have mass produced the Model T, and life would be completely different.