WC Dillon and Co. a family business was founded in 1937 as a supplier of cable tensioning products, which were primarily marketed to the US armed forces. The company grew rapidly during the major wartime periods of the twentieth century. Ownership changed in the early 1980s, when WC Dillon's manufacturing operations were integrated with those of Santa Rosa, CA based scale manufacturer National Controls Inc. (NCI), a division of Scope Inc. Dillon was acquired by Avery Weigh-Tronix, LLC but the Dillon brand was maintained.

Dillon is a market leading manufacturer of instrumentation that measures force including load cells, overload protection and suspended weighing products. Dillon also offers Force Testing Products popular within Quality Assurance departments. The Dillon brand was founded on the mechanical dynamometer, which it invented in 1937. Designed for longevity, this instrument is still an extremely popular seller. The modern Dillon product line boasts the largest range of electronic dynamometers and crane scales and instrumentation specific to overload detection and wire tension measurement. Dillon has earned a reputation for rugged, long-lasting products that are easy to use. Equally as important is the world-wide distribution network that assists Dillon customers with product selection and unequaled service after the sale.