Precision engineering, necessary for the instruments (used in the Great Arc), is very critical. A lot of these instruments were made in India. The Great Arc's senior instrument designer and engineer was in fact from Arcot in Tamil Nadu. He was called Syed Hussain Mohsin, I think.பிரன்ட் லைன் பத்திரிக்கையில் உசேனை பாராட்டி வெளிடப்பட்ட செய்தி
