T J Williams Ltd was formed 150 years ago to supply nautical instruments and charts to the thriving shipping industry in South Wales. Today, T J Williams Instrumentation is a manufacturer of mechanical pressure gauges including Test Gauges, Tank Contents Gauges, Low pressure Capsule Gauges, and Chemical Seals.

T J Williams Instrumentation also offers a comprehensive Calibration and Repair service on all types Pressure, Temperature, Level, and Flow Instrumentation. We also recognise that our customers not only require quality products, but look to T J Williams too provide a design and development service and this is maintained by working with ISO 9001 accreditation.