Profile: TJ Williams Ltd. is a manufacturer of pressure/vacuum gauges, test gauges, tank contents gauges, and chemical seals. We have ISO 9001 quality certification. Our brass cased gauge is suitable for non-aggressive gaseous and liquid media which are not highly viscous & do not crystallize. Our stainless steel diaphragm gauge is ideal for use where the medium being measured is highly viscous and contains solids in suspension. Our 14B bolted diaphragm seal gauge is an instrument which can be fitted with a variety of flanges or threads. Our filled system thermometers offer tough and accurate instruments with rigid stems for direct mounting or with flexible capillary for remote reading. We offer full calibration and repair services on all types of instrumentation.