I bought mine on sale at Walmart—it’s a Presto - No gauge on top or elsewhere. It has a 3 ring pressure regulator, and air vent/cover lock, and a safety over pressure plug.
I have a water bath canner that I bought the first year we were married-back in the 60s. I have used that for pickles, tomatoes and jelly. It also served as a washing machine back when we were too poor to go to the laundry or make payments on a washing machine.
LOL...yes...the water bath canners hold a LOT of water!
Mine has the gauge.....which, you’re supposed to get inspected by the county extention office, every year.
Well, ours was closed, when I was ready to can....so I rolled the dice, went ahead with my canning, and....thankfully, all was well.
Now, I’m praying that the freezers hang in there, or, I’ll be rolling it out, again, fast.
May do some more meat canning, regardless, in a few weeks. Luckily, I have plenty of jars/seals. Those things are nearly impossible to find, now.
:(