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A strain measurement trainer is a laboratory training apparatus designed to help students and engineers understand how strain (deformation per unit length) is measured in materials under stress. It typically uses strain gauges—small sensors that change resistance when stretched or compressed—to teach practical applications of strain measurement. Purpose: Used in educational labs and industrial training centers to demonstrate: The principle of strain gauges Stress-strain relationships Bridge circuits (especially Wheatstone bridge) Calibration and sensitivity analysis Material deformation behavior