Axis defined by measuring 6.75" from both the x-axis and y-axis and extending from that point through the center of gravity of the ball.

In a gyro, an axis through the center of gravity and mutually perpendicular to both the X (spin) and Y axes.

points, representing a straight line, which are perpendicular to a video source. The Z-Axis is used as a reference for depth (to enlarge or reduce an image) in video effects mechanisms.

(1) A third dimension added to a crossplot of two parameters in an X-Y plane. The z-axis is perpendicular to both x- and y-axes. (2) In well logging, variation of the intensity of the recording spot is called z-axis variation, as in Micro-Seismogram.