The document describes various tensile testing instruments manufactured by Shanta Engineering, including hand operated, twin column universal, single column universal, and electronic tensile testing machines. The machines can test materials like rubber, plastics, cables, leather, paper, and metals under tension, compression, bending or flexural loads. Key features include digital load and displacement readouts, adjustable speeds, optional load cells and accessories for specific tests. Specifications include load capacities, resolutions, speeds, dimensions and power requirements.