The Pierce County UW-Extension Office offers dial gauge testing, free of charge. The dial gauge is tested against a calibrated reference gauge to determine accuracy. Gauges testing +2 psi of the target pressure of 6 psi or 11 psi can be safely used at home.
To schedule an appointment to have your canner lid tested, please call the Pierce County UW-Extension Office at 715-273-6781. You can also drop your lid off, and we will test it and call you when it is ready to be picked up.
If you have any