PTES manufactures, services and calibrates tensile testing equipment such as testers, clamps and fixtures for materials property testing: -Testers. PTES manufactures, services and calibrates a wide range of mechanical and electronic tensile testers, scales, force gauges, load cells, rheometers, viscometers, measuring devices and many other items. -Clamps. PTES manufactures a full line of mechanical and air-actuated clamping systems for use in many industries: fabrics, textiles, yarn and string, cloth, leather, rope, wire, cable, plastics, elastomers, rubber and elastomers and many others. -Fixtures. PTES manufactures a full line of fixtures for use in a variety of ASTM and proprietary testing such as bursting, peels, adhesion, etc.