**The original form of a weighing scale consisted of a beam with a fulcrum at its center. For highest accuracy, the fulcrum would consist of a sharp V-shaped pivot seated in a shallower V-shaped bearing. To determine the mass of the object, a combination of reference weights was hung on one end of the beam while the object of unknown mass was hung on the other end. For high precision work, the center beam balance is still one of the most accurate technologies available, and is commonly used for calibrating test weights.
** http://www.reference.com/browse/wiki/Weighing_scale
Answer
If you're going to make a weight scale you're going to have to go through alot of trouble just to make. Might as well buy one.
First answer by Dukemon. Last edit by Tmtraefald. Contributor trust: 114 [recommend contributor]. Question popularity: 49 [recommend question]




