What is the function of a calibrated weight?

A calibrated weight serves a critical role in ensuring the precision and accuracy of weighing instruments like scales and balances. When a calibrated weight is used, it allows users to check whether the instrument provides accurate measurements by comparing the weight displayed by the scale to the known weight of the calibrated object. This verification process is essential for industries and applications where precise measurements are vital, such as laboratories, manufacturing, and quality control. The calibration ensures that the weighing equipment maintains its accuracy over time and provides reliable results.

The other options, while related to measurement and material testing, do not align with the specific function of a calibrated weight. For instance, measuring the density of liquids requires additional calculations and often different types of equipment, such as hydrometers. Similarly, calibrating temperature measuring devices involves standard temperature points and thermodynamic principles, which do not pertain to the function of a weight. Lastly, testing materials for tensile strength involves specific testing equipment designed for that purpose, which is distinct from the role of a calibrated weight in verifying the accuracy of scales.