Ancient rulers were often made of wood, metal, or stone, with markings indicating units of measurement such as inches, feet, or cubits. These early rulers were usually not standardized, and their accuracy depended on the skill of the craftsman who made them.
Over time, as technology and scientific knowledge advanced, the design and precision of rulers improved. Standardization of measurement systems also contributed to the development of more accurate and reliable rulers. In the 16th century, the French mathematician Jacques Besson invented a more precise ruler known as the "pantograph," which allowed for the precise copying and scaling of drawings and maps.
Significant developments in the design and accuracy of rulers continued throughout history. In the 19th century, the "steel tape measure" became widely used, and by the 20th century, electronic digital rulers were introduced, providing even greater precision and versatility in measuring.
Therefore, the invention of the ruler is not attributed to a single person but rather represents the cumulative evolution and refinement of measuring devices over several millennia, influenced by various cultures and scientific advancements.