GMasterman wrote:
As I remember, my Mom's old pressure cooker had just an open tube on top that
served as a safety when a calibrated weight was set on top. As pressure biult
uo, the weight, which sorta looked like a solid metal jigger, would lift and
vent the excess steam. Bet it would not build more than a pound or two
how mutch pressure are they supposed to hold?

1 atmosphere?