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  1. A scale or balance is a device used to measure weight or mass. These are also known as mass scales, weight scales, mass balances, massometers and weight balances. The traditional scale consists of two plates or bowls suspended at equal distances from a fulcrum.

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      An analytical balance (or chemical balance) is a class of...

    • Balance

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    • Spring scale

      A spring scale, spring balance or newton meter is a type of...

    • Balance scales

      Weighing scale#Balance To a section : This is a redirect...

  2. balance, instrument for comparing the weights of two bodies, usually for scientific purposes, to determine the difference in mass (or weight). The invention of the equal-arm balance dates back at least to the time of the ancient Egyptians, possibly as early as 5000 bc.