Keuffel & Esser Company

Keuffel & Esser Company was a prominent American manufacturer founded in 1867, known for producing high-quality drafting instruments, mathematical devices, and engineering supplies. Their products, including slide rules, calculators, and drafting tools, were essential for engineers, architects, and students for precision measurements and calculations. The company played a key role in supporting technical and scientific work throughout the 19th and 20th centuries. In 1974, the company was acquired by Corp. from New York, but its legacy as a leader in technical and engineering instruments remains significant.