Scully Signal Company has been pioneering liquid detection and handling systems since 1936. Our products include electronic automatic and continuous self-checking overfill prevention systems, self-proving grounding systems as well as vapor sensing and identification systems. Industry applications include terminals/gantries, storage tanks, railcars, road tankers and aviation re-fuelers. Scully designs and manufactures all of our equipment to meet the strictest quality standards and offers worldwide service and sales support.