Review on 🌬️ Presto 85771 Steam Gauge for Pressure Canner by Seema Schroeder

I looked at this gauge and read reviews here and elsewhere about the missing nut and gasket/washer. Read another review that the Presto uses 3 different types of gauges and must match the model number on the can (on the bottom of the can like I have 01/CA21H but there are many model numbers). So this gauge is probably intended for use on models where the gauge screws directly into a thread on the cap rather than being inserted into a hole which requires a gasket/washer and nut to secure.