What is ' Wide angle spy hole in doors ' ? And give a picture of it.
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A peephole, peekhole, spyhole, doorhole, magic mirror or door viewer, is a small opening through a door allowing the viewer to look from the inside to the outside.
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In a door, usually for apartments or hotel rooms, a peephole enables to see outside without opening the door. Glass peepholes are often fitted with a fisheye lens to allow a wider field of view from the inside.
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