A spring scale measures weight or force by hanging objects from its hook, making it an easy way for kids to see how weighing works. To measure a loose material such as sand, pour it into a plastic bag and hang the bag from the spring scale hook. This one has a dual scale that reads 0-100 g in 1 g increments and 0-1 Newtons in 0.01 Newton increments. Accuracy is ± 1%.
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