The contribution of India's small-scale sector to the gross turnover in the manufacturing sector since 1992 has been of the order of

1. The question asks about the approximate contribution of India's small-scale sector (SSI) to the gross turnover in the overall manufacturing sector in the period starting from 1992. 2. During the 1990s, the small-scale sector was a vital part of India's industrial landscape, significantly contributing to production, employment, and exports. 3. Official data and economic reports from that era (e.g., Economic Surveys, SIDBI reports) consistently placed the share of the SSI sector in gross industrial value added or manufacturing sector turnover at approximately 40%.