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.
bar
The bar is a metric unit of pressure defined as exactly 100,000 pascals. It is not an SI unit, but it is close to ordinary air pressure – a standard atmosphere is 1.01325 bar – which is why weather forecasts use millibars (1 millibar is 1 hectopascal).