nutator

nutator

[′nü‚tād·ər]
(engineering)
A mechanical or electrical device used to move a radar beam in a circular, conical, spiral, or other manner periodically to obtain greater air surveillance than could be obtained with a stationary beam.
References in periodicals archive ?
In all steps that involved dissolving solids or mixing liquids, samples were rocked on a Nutator mixer (BD) for 5 min to ensure homogeneity.