The Dukes & Briggs Engineering Company were manufacturers and suppliers of custom built electrical equipment including stroboscopes, timers, power supply units and network analysers. In 1955 Philip Harold Briggs and Kenneth James Butler invented a device for measuring the speed of yarn, which the company patented jointly with the British Rayon Association. Other patents were later registered for a rotary flowmeter (1963) and a new or improved flow-responsive instrument for use with fluids (1969). The company was acquired by Sir W H Bailey & Co Ltd in 1968.

Philip Harold Briggs was an engineer, inventor and entrepreneur known to have been active in the 1950s and 1960s. Briggs was a co-founder of the Dukes and Briggs Engineering Company. Alongside Kenneth James Butler he invented and patented a device for measuring yarn. Briggs completed his thesis in Engineering in 1964. Briggs designed a Network Analyser, a form of analogue computer with valves, which was used by the electricity industry to plan and analyse the electricity network. The Dukes and Briggs company manufactured the analyser and sold it to Britain's Central Electricity Generating Board. Most area boards also had them, as well as electricity industries in Spain, Australia and Saudi Arabia.