Windridge Sensors is a family-run business founded in 2007 by Alan and John Duff. Collectively Alan and John have over 50 years experience in sanitary process control and commercial measurement systems.

Alan Duff (BSc Eng, CEng, MIMechE, MIET) is the inventor of the Keyhole Sanitary Sensor's patented sealing mechanism. He designed the device during his long career in Unilever PLC where it has been used in proprietary manufacturing processes for many years. In 2006 he obtained the worldwide exclusive license to patent & commercialize the essential technologies used in the design of the sensor.

John Duff (BSc Eng, MBA) is the President of Windridge Sensors. He has over 20 years of experience in the global test & measurement industry through a career at Hewlett Packard and it's technology spin-off company, Agilent Technologies.

Windridge Sensors is based in North Carolina, USA.