73 / | HD | MEASURING AND TESTING |
488 | DF | SPEED, VELOCITY, OR ACCELERATION {29} |
504.02 | DF | .~ Angular rate using gyroscopic or Coriolis effect {4} |
504.05 | .~.~ Fluid or fluent inertial mass (e.g., electrons, ions, plasma) {2} | |
504.06 | DF | .~.~.~> Fluid jet |
504.07 | DF | .~.~.~> Rotary |