Technology on Instagram: "The Leroy Lettering System, invented in 1937, was a mechanical drafting tool that helped engineers and architects create perfectly uniform letters and numbers. By guiding a pen along engraved templates using a stylus, it transformed shaky, inconsistent handwriting into clean, precise text on technical drawings—long before computers and CAD software existed. This system became a standard in engineering and architectural drafting for decades due to its accuracy and profes