[masraum]

Originally Posted by stevej37

I remember a temp/pressure gauge that was built into the top center of the lid. I think it was up to the operator to open a knob to release the pressure when it got to a certain amount...and then close it again to raise it. (or raise or lower the heat to do the same)
I'm not sure...but I know the rocking ones are the next gen and they don't require any adjusting. Just let it do it's thing.

Ah, OK, so there was a mechanism in place to manage the pressure, but it was manual. That makes sense.