Is there any tool in some PDF Viewer/Editor like Acrobat, Evince, etc. where I can navigate and watch coordinates(i.e. (x,y)) of any selected point in PDF-document?
I use InkScape v 0.91 to map out PDF rectangles for extracting text. It can load a PDF into the canvas. Don't forget to change the measurements to inches (Ctrl-Shift-D) with the document open for the document properties. For the Page property tab set the Default Units to inches, for the Grids property tab set Grid Units to inches. This page, PDF coordinates, explains the PDF coordinate system, and its unit of measurement.