POTTER'S WHEEL • DICCIONARIO INGLES.COM • Definition of Potter's wheel

... into the clear space between the white and the violet, and now he saw that the effect upon the pool was still more pronounced. The waters were rising up in a rim all around, and yet not overflowing. They were standing up like a bowl of clay upon the potter's wheel, and down in the depths Jim could see the head and shoulders of Tode, much less magnified, more natural in appearance, and less blurred. And Tode was looking up at him and pointing that infernal mechanism at him—something that looked like ...

— Astounding Stories of Super-Science, May, 1930 • Various