Answer :
A triple beam balance, also known as a triple beam scale, is a type of mechanical balance that is commonly used in laboratories, schools, and other settings to measure the weight or mass of an object.
It is called a triple beam balance because it has three beams with sliding weights that are used to measure the weight of an object.
The triple beam balance typically has a pan or tray on which the object to be weighed is placed. The three beams on the balance are marked with graduations and each has a sliding weight that can be moved along the beam to balance the weight of the object on the pan.
The user moves the sliding weights along the beams until the balance is in equilibrium, at which point the weight of the object can be read from the graduations on the beams.
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