Well like the Doctor said.....the 0-100psi is way to much gauge......I however went with that one because I also wanted to have all my gauges matching and didn't care that it only took up a quarter of the gauge!!

I'd rather have a matching gauge, I hate the look of mismatched stuff!!


~Nick

 

Nick, the problem with that is you are not getting the accuracy you need. Mechanical guages read more accurately around midscale than when they are measuring the low and high ends of the scale.

Youd rather have a matched guage than one that reads accurately??

 

Doc, that's a full sweep electric gauge (like a pyro). AutoMeter does not offer mechanical FP guages in many of their lines because they don't want people mounting them inside their vehicles. That's why my truck has a "Water" pressure gauge in it.

I agree that a 100 psi gauge is not ideal - hard to tell the difference between 5 and 10 psi at a glance there. That's a resolution issue though, not an accuracy issue.

 

I was in a bit of a hurry when I typed (walking out the door) - I guess my point was that accuracy is more important than having a matching guage.

One other point I was making though, is that due to the internal construction of mechanical pressure guages the inherent accuracy will be lower on the bottom and top ends of the scale. Therefore, you WILL see more accuracy when the pressure guage is in the midscale regione. Therefore, its important to not pick a guage that will be maked out by its reading.

And yes, I did learn this in Instrumentation school .

 

Did you learn how the mechanical pressure gauge was invented?
This French guy named Bourdon was making liquor with his still when something went wrong and the coiled copper tubing he was using collapsed. He noticed that when applying pressure to the collapsed tubing that it expanded and contracted. This became the principle behind a mechanical pressure gauge. The small coiled tubing even in a modern gauge is called a Bourdon tube.

 

Who said "drunk" guys didnt know anything??

 

I'm with ya on that, Doc. I just wanted to make sure you knew that wasn't a mechanical gauge.

 

yup...I screwed up cause I was in a hurry and the ol lady was yelling at me.... . I think you know the rest of the story