Screen Has bruised to the wiper

[Sandun]

Dear Sirs , Screen of my morris minor 1000 car has bruised to the wiper - Pleas tell me how to remove the bruise marks on the Screen-

[Neil MG]

If you refer to the scratches in the screen caused over time by grit on the wiper blade, then they are very difficult (time consuming) to remove. It is possible to do with different grades of glass polishing discs, an electric (or air powered) polisher and lots and lots of patience.
http://glasspolishshop.com
http://www.glassscratchrepair.co.uk/
http://www.glasstechnics.co.uk/scratchremoval.html
http://www.youtube.com/watch?v=ghxlyFbazx0
http://www.youtube.com/watch?v=qJ0FRiqteb0
Google "windscreen" and "glass" "scratch removal" and with "video" for lots more info....