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and a dish in the upper surface is known as the hopper. A handle slot contained a handle which enabled the rotary quern to be rotated.

They were first used in the Neolithic era to grind cereals into flour.

Design

The upper stones were usually concave while the lower ones were convex. Quern-stones are frequently identifiable by their grooved working surfaces which enabled the movement of flour. Sometimes a millrind was

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