Ink Pen or gal pen on OMR Sheet addmengroup.com
OMR stands for Optical Mark Recognisation or Optical Mark Reader. This technique is used to analyze data. It is capable of reading marks formed by a pen or pencil in the pre-defined places, of a document or paper.For more details visit here https://www.addmengroup.com/OMR-Filling/use-of-ink-pen-or-gel-pen.htm
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