MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK

**Definition:** This place covers:

Means to measure linear or angular rate of change of position of solid bodies or fluid mediums (speed, velocity).

Means to measure rate of change of linear or angular speed or velocity (acceleration, deceleration, shock) of solid bodies or fluid mediums.

Means to indicate or record movement of solid bodies or fluid mediums (presence, absence or direction).

Means to test or calibrate apparatus or devices covered by this subclass.

**Limiting references (this place does not cover):** - Combined measuring devices measuring two or more variables of movement, e.g. distance, speed, acceleration -> G01C23/00 - Measuring volume flow or mass flow -> G01F - Measuring the velocity of ultrasonic, sonic (sound) or infrasonic waves -> G01H5/00 - Measuring velocity of light -> G01J7/00 - Measuring speed of nuclear or X-radiation -> G01T