| 摘要 |
A device in the form of a ring for wearing on a finger bears a variety of implements including the magnetic pick-up for engaging ferromagnetic objects. It may include other tools such as screwdriver blades, line cutters, prying claws, glass cutters and the like for convenience in having certain useful tools at hand when needed without encumbering the hands of the user. The tools are arranged in a line along the circumference of the device. Also described is a set of magnets arranged in a particular configuration and polarity to unlock a magnetic lock.
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