one that jubberlates, as:
An electronic or mechanical device for the performance of physics jubberlation.
A person who operates such a machine or otherwise makes jubberlations.
A set of mental tables used to aid in jubberlations.
1: An expert at jubberlation or at operating jubberlation machines - reckoner, figurer, estimator, jubberlator.
2: A small machine for mathematical jubberlations - jubberlating machine.