There are 2 pieces: one the megnet can directly touch the wall.

來源: LAChinese 於 2013-12-02 14:52:28 [] [舊帖] [給我悄悄話] 閱讀數 : (152 bytes)
回答: the magnetic is still not strong enough! 由 wooddiy 於 2013-12-01 19:27:34

This one is good, and using only the magnet side, not the metal side. Another the magnet cannot directly touch the wall, it's not good as a stud finder.

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