Mass Calibration Service process is accomplished through a hierarchical system where each scale is compared against an external reference, known as a standard. Each standard is then tested against a higher level (more accurate and precise) standard, which is compared against an even higher standard, and so on. This process of comparison against a standard, and making any necessary adjustments, is commonly referred to as calibration. Our environmentally-controlled Mass Calibration laboratories are fully accredited and equipped with state-of-the-art equipment.