A device operated solely by human force is used to duplicate keys. This typically involves aligning a blank key with the original and using calibrated levers and cutting wheels to precisely carve the duplicate. A common example is a tabletop device used by locksmiths or hardware store employees.
Such devices offer a cost-effective and readily available solution for key duplication, especially in situations where electricity is unavailable or impractical. Historically, these tools represented the standard method of key cutting, predating automated and computerized processes. Their simplicity and durability contribute to their continued relevance, particularly for basic key types.