Engineers India was locked at the upper circuit with 20 per cent gains at Rs 581.80, from its previous close of Rs 484.85. Over 2.1 lakh shares were traded against the two-week average of 23,000. The company provides project consultancy and turnkey project execution services. Its financials have improved on account of better efficiencies, evident from the improvement in operating margins from 6 per cent in FY04 to 25 per cent in FY07.