whirling-table

from The Century Dictionary.

• noun A machine contrived for the purpose of exhibiting the principal effects of centripetal or centrifugal forces, when bodies revolve in the circumferences of circles or on an axis.
• noun In pottery, a potters' lathe for holding a plaster mold in which is laid a thin mass of clay, to form a plate or other circular piece.
• noun A horizontal arm mounted for rotation about a vertical axis, used in experiments in aërodynamics, in determining the constants of anemometers, or for other purposes for which high velocities are desired under conditions thus attainable.