Originally Posted by
India Four Two
“Altimeter setting” or just “Altimeter” is universally used in the US and Canada.
"Altimeter bla bla bla" is similar to QNH in the sense that it refers to mean sea level pressure. The way it is calculated (non-temp corrected) is the same.
But in the US at least, it's expressed in inches (actually 1/100 inches) of mercury, instead of hPa. So "QNH 1013" is identical to "altimeter 2992". Yes, there are conversion charts and any modern altimeter intended for use worldwide has both subscales.