Re:How pencil tire pressure gauges work
by eternityforest on Saturday December 10, 2022 @04:30AM
(#33931251)
I don't think I've ever seen one up close, so I assumed it had to do with how fast the air rushes out, in a way overcomplicated way.
I thought maybe the design was such that the farther away it was, the less it would get blown on, and a given pressure would be able to make a certain amount of inertia before it was too far.
For some reason I imagined people had to manually push it back in and reset it, so there couldn't possibly be a spring.
I didn't even know they had springs at all! I'm sure I would have figured it out if I had examined one though, since it's basically a piston on a scale.
I thought maybe the design was such that the farther away it was, the less it would get blown on, and a given pressure would be able to make a certain amount of inertia before it was too far.
For some reason I imagined people had to manually push it back in and reset it, so there couldn't possibly be a spring.
I didn't even know they had springs at all! I'm sure I would have figured it out if I had examined one though, since it's basically a piston on a scale.