了解物体有多重对于人类生活和工农业生产都至关重要,随着商品交换的产生和发展,人类很早就开始摸索对各种物体进行必要的测量。人们把量重的器具称为衡器。早期的衡器一般是利用力的杠杆平衡原理或弹簧形变平衡原理测定物体重量的。进入20世纪中叶,随着科技的进步,开始出现简单的电子衡器。 Understanding how multiplicity objects are vital to human life and to industrial and agricultural production has long since explored the necessary measurements of various objects with the emergence and evolution of commodity exchange. People weigh heavy appliances as scales. Early weighing instruments are generally leverage the lever balance principle or spring deformation balance principle of measuring the weight of objects. Into the mid-20th century, with advances in technology, began to appear simple electronic weighing.