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99% Invisible
99pi.org
did:plc:fzu6cqfvkc5rwzdcbsda3lda
A tiny screw. A precise angle. How America built a hidden empire, one standard at a time.
Listen to a new episode of A History of the United States in 100 Objects on the 99% Invisible feed 👉 https://bit.ly/4fNZhPW
2026-05-29T22:39:31.173Z