Abstract: A device for enabling the driver of a vehicle to view behind the vehicle as he is driving. The apparatus includes a number of elongated periscopes mounted generally vertical within the vehicle. The periscopes are mounted so as to provide adjacent angular fields about a generally vertically-oriented axis. The device further includes a plurality of sleeves, each sleeve receiving a corresponding periscope for axial movement for relative thereto. The sleeves are mounted for movement about a generally horizontal axis. Each sleeve includes a pawl member which projects axially from its corresponding sleeve.