Material testing instruments and machines, namely, metal compression testing machines, plastic testing machines, electromechanical apparatus for testing asphalt, soil, unbound granular materials, metallic and non metallic building materials consisting primarily of testers for tensile, compression, fatigue, reverse stress, shear, flexure, peel, tear, cyclic, torsion, and bend testing; servohydraulic fatigue and static hydraulic material testing machines consisting primarily of testers for tensile, compression, fatigue, fracture, shear, and bend testing; hardness testing equipment, namely, resistance measuring instruments for measuring resistance of materials to indentation, scratching, abrasion, or cutting; material impact testing equipment, namely, servohydraulic testers for measuring impact forces and material deformation; material testing instruments, namely, strain gauge electrical transducers for measuring load and strain; material testing instruments, namely, optical and video extensometers for contact-free measurement of material deformation; handheld and portable mechanical testing machines for tensile, compression, torsion, reverse stress, shear, flexure, peel, tear, cyclic and bend testing, comprised primarily of electronic apparatus for testing compression, strength, hardness and tensile characteristics of industrial materials; torsion material testing instruments, namely, testers for measuring twisting deformation of a solid body; material testing instruments, namely, spring testers for testing coil and leaf springs in tension and compression; material testing instruments, namely, direct and indirect tension testers for measuring the physical properties of asphalt binders and mixes; material testing instruments, namely, microelectronic testers for measuring the mechanical properties and failure mechanisms of microelectronic components and devices; material testing instruments, namely, environmental test chambers in the nature of temperature controlled enclosures for temperature simulation; machine tools controlled by computers, namely, scientific apparatus for testing material endurance of asphalt, soil, unbound granular materials and metallic and non metallic building materials
Electrical and Scientific Apparatus