How are commercial weights defined in terms of mass?

Commercial weights are defined as "standards" of mass, which means they serve as established benchmarks for accurately measuring weight in various applications. These weights provide a reliable reference for ensuring that commercial scales and measuring devices are functioning correctly. By serving as standards, they help maintain consistency and reliability in weighing practices across different industries.

In practical terms, using commercial weights as standards allows businesses to comply with regulatory requirements and ensures fair trade practices. This is particularly important in retail, shipping, and other sectors where precise measurements are critical for both legal compliance and customer satisfaction.

Other options do not reflect the true nature of commercial weights. Individualized weights for calibrating scales are part of the calibration process but do not define what commercial weights are. Describing commercial weights as merely approximations undermines their role as precise standards. Furthermore, suggesting that they are theoretical weights not used in practice misrepresents their practical application in various industries, where they are widely utilized for measurement accuracy.