A personal regulator or device having special covers and a plurality of interior panels or pages containing various hinged structures. The hinging structures are precision expandable hinges which permit portions of consecutive panels to be functionally interactive and viewed simultaneously and/or to permit viewing of different portions of interior panels while viewing two charts attached to the device enclosures. The precision expandable hinging structures provide and allow for a plurality of charts to be viewed simultaneously and accurately registered with each other without the need of repeatedly turning between pages or panels.