On Standards

Quote: “April 21, 1864 - William Sellers, a tool builder, began the “Standards Revolution”; that is, he wished to standardize screws, nuts, and bolts made by American tool builders. The speech he gave that day was called “On a Uniform System of Screw Threads.”

[via Justin Goodlett, (scroll to bottom of page)]

[see also The United States Standard Screw Threads (1864)]