Before computers… before printers… engineers had THIS. ✍️⚙️ The Leroy Lettering Set was the original “human CAD” — a purely mechanical tool that could draw perfectly uniform letters and numbers with incredible precision. No electricity. No software. Just skill, gears, and craftsmanship. This tiny device helped build the industrial world, labeling blueprints and designs down to fractions of an inch. A true reminder that innovation didn’t start with screens — it started with hands. Would you have