The mysterious metallic object that intrigued the Internet: do you know what it was used for?

unusual device is an old-fashioned manual meat grinder.

Before electric kitchen appliances became common, hand-operated grinders were useful household tools. They were designed to turn pieces of meat into ground meat using a simple mechanical system.

The design may look complicated, but the principle is surprisingly straightforward.

The grinder is usually secured to the edge of a sturdy table or countertop with a clamp. Pieces of meat are placed into the opening at the top.

When the user turns the crank, an internal screw, sometimes called an auger, moves the