<Table> <Tr> <Td> </Td> <Td> The examples and perspective in this article may not represent a worldwide view of the subject . You may improve this article, discuss the issue on the talk page, or create a new article, as appropriate . (October 2017) (Learn how and when to remove this template message) </Td> </Tr> </Table> <Tr> <Td> </Td> <Td> The examples and perspective in this article may not represent a worldwide view of the subject . You may improve this article, discuss the issue on the talk page, or create a new article, as appropriate . (October 2017) (Learn how and when to remove this template message) </Td> </Tr> <P> Weighing scales (or weigh scales or scales) are devices to measure weight or calculate mass . Spring balances or spring scales measure force (weight) by balancing the weight due to gravity against the force on a spring, whereas a balance or pair of scales using a balance beam compares masses by balancing the weight due to the mass of an object against the weight of a known mass or masses . Either type can be calibrated to read in units of force (weight) such as newtons, or in units of mass such as kilograms, but the balance or pair of scales using a traditional balance beam to compare masses will read correctly for mass even if moved to a place with a different (non-zero) gravitational field strength (but would then not read correctly if calibrated in units of force), while the spring balance would read correctly in force in a different gravitational field strength (but would not read correctly if calibrated in units of mass). </P> <P> Scales and balances are widely used in commerce, as many products are sold and packaged by weight . Very accurate balances, called analytical balances, are used in scientific fields such as chemistry . </P>

What do you measure with a balance scale
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