Heinrich Wilhelm Keuffel

Heinrich Wilhelm Keuffel was a German-born American engineer and inventor, best known for founding Keuffel & Esser Co. in the 1860s. This company specialized in producing high-quality drafting tools, such as slide rules, which were essential for calculations in engineering and science before the advent of calculators and computers. Keuffel’s slide rules and instruments were widely used in education and professional fields. His contributions significantly impacted the way measurements and calculations were conducted, reflecting the technological advancements of his time. Keuffel & Esser remains a notable name in the history of engineering tools.