Torrs
The torr is named after Evangelista Torricelli, an Italian physicist who invented the barometer. One torr is the pressure of a 1 millimeter column of mercury at 0 degrees Celsius.
pound force per square inch
Pound force per square inch (psi) is a unit from the Imperial system defined as the pressure resulting from a force of one pound-force applied to an area of one square inch. It is used in various applications such as tire pressure and hydraulic systems.