Lon

14.7 more or less, or 29.92 Hg or 1013 millibar at standard temperature
and mean sea level.

Could probably be gotten from one of those old center reading boost
gauges with a custom faceplate and calibration.

L.W.(Bill) ------ III proclaimed:
> Normal atmospheric pressure at sea level is about fifteen pounds per
> square inch, which of course not a vacuum, that would be then read in
> inches of mercury. So, sane people would measure that fifteen pounds as
> just ZERO, and use the typical manifold gauge:
> http://www.----------.com/vacuumgauge.jpg KISS
> God Bless America, Bill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> Bret Ludwig wrote:
>
>> Exactly what I DO NOT want. I want the gauge to read MANIFOLD
>>PRESSURE. We are at 29.92 inches of mercury at sea level on Planet
>>Earth. I want it calibrated in inches of mercury, NOT pounds per square
>>inch, atmospheres, or kg/cm2. And I want it to read ambient pressure
>>when the engine is off and lower running-on a naturally aspirated
>>engine it will never read higher.

L.W.(Bill) Hughes III

You may see another typical day in sunny California, under a
mountain of high pressure: http://www.----------.com/vacuumgauge.jpg Oh
well, it is Summer time, I think I'll go to the beach:
http://www.camzone.com/index.php?cam=scripps ;-)
God Bless America, Bill O|||||||O
mailto:-------------------- http://www.----------.com/

Lon wrote:
>
> 14.7 more or less, or 29.92 Hg or 1013 millibar at standard temperature
> and mean sea level.
>
> Could probably be gotten from one of those old center reading boost
> gauges with a custom faceplate and calibration.
>
> L.W.(Bill) ------ III proclaimed:
> > Normal atmospheric pressure at sea level is about fifteen pounds per
> > square inch, which of course not a vacuum, that would be then read in
> > inches of mercury. So, sane people would measure that fifteen pounds as
> > just ZERO, and use the typical manifold gauge:
> > KISS
> > God Bless America, Bill O|||||||O
> > mailto:-------------------- http://www.----------.com/
> >
> > Bret Ludwig wrote:
> >
> >> Exactly what I DO NOT want. I want the gauge to read MANIFOLD
> >>PRESSURE. We are at 29.92 inches of mercury at sea level on Planet
> >>Earth. I want it calibrated in inches of mercury, NOT pounds per square
> >>inch, atmospheres, or kg/cm2. And I want it to read ambient pressure
> >>when the engine is off and lower running-on a naturally aspirated
> >>engine it will never read higher.

L.W.(Bill) Hughes III

You may see another typical day in sunny California, under a
mountain of high pressure: http://www.----------.com/vacuumgauge.jpg Oh
well, it is Summer time, I think I'll go to the beach:
http://www.camzone.com/index.php?cam=scripps ;-)
God Bless America, Bill O|||||||O
mailto:-------------------- http://www.----------.com/

Lon wrote:
>
> 14.7 more or less, or 29.92 Hg or 1013 millibar at standard temperature
> and mean sea level.
>
> Could probably be gotten from one of those old center reading boost
> gauges with a custom faceplate and calibration.
>
> L.W.(Bill) ------ III proclaimed:
> > Normal atmospheric pressure at sea level is about fifteen pounds per
> > square inch, which of course not a vacuum, that would be then read in
> > inches of mercury. So, sane people would measure that fifteen pounds as
> > just ZERO, and use the typical manifold gauge:
> > KISS
> > God Bless America, Bill O|||||||O
> > mailto:-------------------- http://www.----------.com/
> >
> > Bret Ludwig wrote:
> >
> >> Exactly what I DO NOT want. I want the gauge to read MANIFOLD
> >>PRESSURE. We are at 29.92 inches of mercury at sea level on Planet
> >>Earth. I want it calibrated in inches of mercury, NOT pounds per square
> >>inch, atmospheres, or kg/cm2. And I want it to read ambient pressure
> >>when the engine is off and lower running-on a naturally aspirated
> >>engine it will never read higher.

L.W.(Bill) Hughes III

You may see another typical day in sunny California, under a
mountain of high pressure: http://www.----------.com/vacuumgauge.jpg Oh
well, it is Summer time, I think I'll go to the beach:
http://www.camzone.com/index.php?cam=scripps ;-)
God Bless America, Bill O|||||||O
mailto:-------------------- http://www.----------.com/

Lon wrote:
>
> 14.7 more or less, or 29.92 Hg or 1013 millibar at standard temperature
> and mean sea level.
>
> Could probably be gotten from one of those old center reading boost
> gauges with a custom faceplate and calibration.
>
> L.W.(Bill) ------ III proclaimed:
> > Normal atmospheric pressure at sea level is about fifteen pounds per
> > square inch, which of course not a vacuum, that would be then read in
> > inches of mercury. So, sane people would measure that fifteen pounds as
> > just ZERO, and use the typical manifold gauge:
> > KISS
> > God Bless America, Bill O|||||||O
> > mailto:-------------------- http://www.----------.com/
> >
> > Bret Ludwig wrote:
> >
> >> Exactly what I DO NOT want. I want the gauge to read MANIFOLD
> >>PRESSURE. We are at 29.92 inches of mercury at sea level on Planet
> >>Earth. I want it calibrated in inches of mercury, NOT pounds per square
> >>inch, atmospheres, or kg/cm2. And I want it to read ambient pressure
> >>when the engine is off and lower running-on a naturally aspirated
> >>engine it will never read higher.

Bret Ludwig

Lon wrote:
> Bret Ludwig proclaimed:
<<snip>>


> Looks like the hot rodders that install absolute pressure gauges tend to
> use aircraft surplus. You could always buy your own sensor and add a
> suitable meter of your choosing for the output.

What with WWII having been sixty-plus years ago, and what with the EPA
***** and the homebuilders and the warbirders, there ARE NO more
surplus manifold pressure gauges. The few survivors are bought up as
core and overhauled and are $400 each. If not OHd the needles will
barely move as the 60 year old grease is now the consistency of stone.

Bret Ludwig

Lon wrote:
> Bret Ludwig proclaimed:
<<snip>>


> Looks like the hot rodders that install absolute pressure gauges tend to
> use aircraft surplus. You could always buy your own sensor and add a
> suitable meter of your choosing for the output.

What with WWII having been sixty-plus years ago, and what with the EPA
***** and the homebuilders and the warbirders, there ARE NO more
surplus manifold pressure gauges. The few survivors are bought up as
core and overhauled and are $400 each. If not OHd the needles will
barely move as the 60 year old grease is now the consistency of stone.

Bret Ludwig

Lon wrote:
> Bret Ludwig proclaimed:
<<snip>>


> Looks like the hot rodders that install absolute pressure gauges tend to
> use aircraft surplus. You could always buy your own sensor and add a
> suitable meter of your choosing for the output.

What with WWII having been sixty-plus years ago, and what with the EPA
***** and the homebuilders and the warbirders, there ARE NO more
surplus manifold pressure gauges. The few survivors are bought up as
core and overhauled and are $400 each. If not OHd the needles will
barely move as the 60 year old grease is now the consistency of stone.