I've been watching a ton of Machine Thinking's videos lately. His series on Metrology (scientific study of measurement) is super interesting. He talks about how

I've been watching a ton of Machine Thinking's videos lately. His series on Metrology (scientific study of measurement) is super interesting. He talks about how to work your way up to precision manufacturing from a set of granite slabs. We owe a ton of thanks to the scientists and engineers that developed techniques to produce very accurate gauge blocks from which the entire modern world is built on.