Knowledge, as they say, is power. And very low steam pressure is the goal. So it stands to reason that we need a way to see how we are doing. Your steam boiler is designed to function at up to 15 lbs of pressure. Above that, very bad things happen. But in reality, we never want to get anywhere near 15 lbs. Unfortunately, at some point in history a nameless bureaucrat decreed that steam boilers shall come standard with a pressure gauge that reads from 0-30lbs. And so they do. And considering that we want to be running on ounces of pressure, -they are utterly useless. So with every installation an additional 0-3 lb steam gauge is offered as an option, complete with a snubber to dampen the dial movement. You see, we even focus on the tiny things to make sure every job is perfect.