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2. Weighing scale - Wikipedia

   en.wikipedia.org/wiki/Weighing_scale

   The balance (also balance scale, beam balance and laboratory balance) was the first mass measuring instrument invented. [1] In its traditional form, it consists of a pivoted horizontal lever with arms of equal length – the beam or tron – and a weighing pan [ 10 ] suspended from each arm (hence the plural name " scales " for a weighing ...

3. Triple beam balance - Wikipedia

   en.wikipedia.org/wiki/Triple_beam_balance

   Base - The base rests underneath the weighing pan and can usually be customized to fit on a workbench or set up with tripod legs. Beams - The three beams on the balance are used to set the level of precision, with each beam working at different increments (1-10 grams, 10 grams and 100 grams). When using the triple beam balance, it is ...

4. Roberval balance - Wikipedia

   en.wikipedia.org/wiki/Roberval_Balance

   A Roberval balance made by W & T Avery Ltd. in England Detail: the bottom horizontal beam is hidden under the protective cover A Roberval balance shown responding to two masses of equal weight. The Roberval balance is a weighing scale presented to the French Academy of Sciences by the French mathematician Gilles Personne de Roberval in 1669.

5. Thaddeus Fairbanks - Wikipedia

   en.wikipedia.org/wiki/Thaddeus_Fairbanks

   Fairbanks scale and log table - Bureau of Mines Weigh Station, Boulder City, Nevada Fairbanks platform and table scales. Thaddeus Fairbanks (January 17, 1796 – April 12, 1886) was an American businessman, mechanic, and engineer. He invented furnaces, cooking stoves, cast iron steel plows, and other metal items related to farming.

6. Spring scale - Wikipedia

   en.wikipedia.org/wiki/Spring_scale

   A spring scale, spring balance or newton meter is a type of mechanical force gauge or weighing scale. It consists of a spring fixed at one end with a hook to attach an object at the other. [ 1 ] It works in accordance with Hooke's Law , which states that the force needed to extend or compress a spring by some distance scales linearly with ...

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