Fuel Pressure Drop

[daveismissing]

Now you know what the liquid does

[Steve Wood]

In the end, it does not matter exactly how precise the gauge is.  It is more important that it reads exactly the same each time

[Forzfed]

Accuracy is the closest to the true value while precision is the repeatability.  Up scale and down scale will vary with the gauge because it inherently suffers from hysterisis.  Given accuracy of a gauge means nothing unless you know if it is for full scale, every half scale or of reading. 

[Steve Wood]

you missed my point...but that is okay

Not disagreeing with what you said as it is part of my point....

[daveismissing]

I always stumble over using those two term correctly.
( my $22.00 used ebay Ashcroft is in the mail )