That sounds incredibly complicated! I wonder if all canner’s pressure gauges are so hard to check/calibrate. I imagine they’re all similar....
So after I buy one, can I assume it’s fine or do I need to have it checked before using?....I guess I can call the manufacturer and let them decide. ;)
I should think a new canner would be accurate, ya know, quality tested and all. Mine is who knows how old, so thought I’d better get it looked at. It’s from the National Pressure Cooker Co. made in Eau Claire, WI. The gauge is a Presto brand. If mine is OK, then I would maybe just need to replace a couple of parts. If not, then I would try to buy another one.