A gear shaper is a machine tool for cutting the teeth of internal or external gears.
However number of cutting teeth must be less than that of the gear to be cut for internal gears.
I felt the grinding vibration of internal gears being engaged and it began to mark time in place.
An internal helical gear and its pinion must be of the same hand.
Conversely, an internal gear is one with the teeth formed on the inner surface of a cylinder or cone.
Gear flow meters rely on internal gears rotating as fluid passes through them.
He removed a cover plate to examine the internal gears, wheels, and motors.
The creature ground some internal gears and said, "Please don't do that."
The mill has no internal gears or machinery.
"Politics is the lubricant that oils your organization's internal gears."