The Instron testing machine plays a critical role in materials engineering education, enabling evaluation of key mechanical properties such as Young’s modulus, yield strength, ultimate tensile strength (UTS), and elongation. However, one major challenge in tensile testing is the scatter in mechanical property data, which may result from inconsistent testing conditions, operator variability, machine precision errors, or nonuniform materials. In this project, every effort was made to minimize scatter caused by inconsistent procedures, operator handling, and material variation. Therefore, isolating and evaluating scatter is attributed specifically to machine precision. By developing a standardized testing procedure for Instron equipment, the repeatability and precision of the machine were assessed to determine its overall reliability. A statistically significant number of samples were tested, and rigorous statistical analysis was conducted to support conclusions regarding the reliability and consistency of the Instron system.