Gong - two whistles facing in opposite directions on a common axis.

I get it-ring lightning instead of ball, and the rings are spinning about their common axis!

"The splits line up with a common axis."

All seven mirrors will be arranged so that the reflecting surface of each of them is on a common axis.

The technology worked to direct shield gas flow parallel to the plasma arc using a common axis.

For the first time, the axis through the patient's eye was fixed at a common swiveling axis.

Another method uses a common horizontal axis while different vertical axis.

They are held with their common axis vertical, so as to provide a liquid-level gauge.

It is made by taking two or more bare wires of the same diameter and wrapping them together symmetrically around each a common axis.

Two large spinning wheels, at the center rear of the unit, are situated with their common axis along the bowling lane.