A radiometer‐type vacuum gauge is described, which is rugged and simple to construct, which can be calibrated from the dimensions of the gauge, and for which the temperature of the moving system does not enter. The gauge, when constructed entirely of metal has a range from 2 dynes per square centimeter to 0.01 dyne per square centimeter. If constructed of glass, the lower limit can be extended to 0.001 dyne per square centimeter or better.