What is "graduator"

Graduator \Grad"u*a"tor\, n.

1. One who determines or indicates graduation; as, a graduator of instruments.

2. An instrument for dividing any line, right or curve, into small, regular intervals.

3. An apparatus for diffusing a solution, as brine or vinegar, over a large surface, for exposure to the air.

n. 1 One who determines or indicates graduation. 2 An instrument for dividing any line, straight or curved, into smaller regular intervals. 3 An apparatus for diffuse a solution, such as brine or vinegar, over a large surface, for exposure to the air.