On Type High Day, which falls annually on 9/18, we celebrate the standardized height of all American metal and wood movable type: 0.9186 inches. This is an essential measurement for all letterpress printers, allowing us to maintain strong lock-ups and high-quality printing. Come celebrate with us at the Common Press! Try out printing on one of our Vandercook printing presses, and pursue our amazing type speciment books.

See this amazing post from our hero at Star Shaped Press for more: https://www.starshaped.com/weekendprinterblog/2017/9/22/we-go-high-type-high