معنی کلمه : hindleys screw
English
A screw cut on a solid whose sides are arcs of the periphery of a wheel into the teeth of which the screw is intended to work. It is named from the person who first used the form.

A screw cut on a solid whose sides are arcs of the periphery of a wheel into the teeth of which the screw is intended to work. It is named from the person who first used the form.