Answer:
to weigh heavy loads such as trucks, storage silos, and material carried on a conveyor belt.
Step-by-step explanation:
Main uses of spring balances are to weigh heavy loads such as trucks, storage silos, and material carried on a conveyor belt. They are also common in science education as basic accelerators. They are used when the accuracy afforded by other types of scales can be sacrificed for simplicity, cheapness, and robustness.