Scully Signal Company is an engineering and manufacturing company established in 1936. With customers like BP, Exxon/Mobil, Delta Airlines, and Union Pacific, Scully is a brand name in the transport and storage of petroleum and liquid chemicals.

Scully's core systems include, but are not limited to, overfill prevention, retained product monitoring, vehicle grounding, level alert notification, and vehicle to terminal communications.
Other related and more recent inventions/offerings include remote fuel site communications, delivery equipment, tank gauging, transfer line and hose connections, and automated fueling systems.