Scully Signal Company, established 1936 is an engineering and manufacturing company and a brand name in fluid detection and handling systems for the loading, transfer, and storage of hazardous liquids.

Products include systems for oil delivery, overfill prevention, static grounding, liquid detection, and vehicle identification. As the inventor of the original Dynacheck® spill prevention self-checking® Circuitry, Scully products prevent spills and ensure efficient and safe liquid product transfer operations.  Scully is family owned and operated, and its products are made in the U.S.A.  at the headquarters in Wilmington, Massachusetts.