Weighbridges Manufacturers & Exporter In India. Leotronic Scales Pvt. Ltd. Was incorporated in 1995. Prior to 1995, the company was engaged in manufacturing conventional Mechanical Weighing System under the brand "Great Weigh". Within a short span, the brand name 'LEO' soon established itself in the market. Today Leo is the largest manufacturer of the weighbridges in the country. Leotronics Scales Pvt. Ltd. Is the largest Manufacturers & Exporter of Weighbridges in India.