What is "Scotograph Instrument"?

A ) Aiding Blind to write in the Darkness ✅

B ) An instrument of measuring frequency

C ) Both a and b are correct

D ) None of the above statements

Related Questions
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  2. ابن خطاب گرائمر کی رو سے کیا ہے ؟
  3. Administrative Headquarter of OIC is located:
  4. Fill in th blank: Whatever he does is always contrary.......my wishes.
  5. "Queer" means:
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