The United States National Weather Service reports pressure in both inches of Hg and millibars. Convert a pressure of 29.2 in. Hg into: (a) torr (b) atm (c) kPa (d) mbar -
Torricelli's Importance in Vacuum Brazing History
Conversion Factors for Pressure Units - Stanford Research Systems
Vacuum Measurement: A Basic Guide - Fluid Power Journal