Every blueprint you’ve ever seen from the 50s was "Machine-Written" by hand.
Meet the Leroy Lettering Set. It used a "pantograph" principle to ensure that every 'A' and 'B' was mathematically identical.
In a world before digital fonts, this was the only way to ensure a part was machined correctly.
Accuracy wasn't an option—it was the law.
Before computers revolutionized animation, The Walt Disney Company produced its films entirely by hand. Animators drew each frame on paper, making small adjustments between drawings to create the smooth illusion of movement.