The WSU Extension Office in Elma is available to test pressure canner gauges. Only “dial” type gauges can be tested and should be checked annually. There is a $2 fee per gauge and the owner of the pressure canner is required to sign a release form. The Extension Office is located on the Grays Harbor County Fairgrounds at the east end of the Pavilion parking lot. Please phone (360) 482-2934 or email email@example.com to schedule an appointment.