Item I: All that entire roof top of the building situated at municipal premises No. 1/1A, Biplabi Anukul Chandra Street, Kolkata - 700 072 "Electronic Centre" containing an area of 4,000 sq. ft. on the 6th floor in the said property together with the undivided proportionate share in the land contained in the said property within municipal limit of Calcutta; East - By premises No.5, Biplabi Anukul Chandra Street: West By premises No.1, Biplabi Anukul Chandra Street; North By Building known as Premier Court (constructed portion of 4, Chandney Chowk Street); South By Princep Street.