在国民经济各部门中,秤是最常用的计量器具之一。秤除去称量重量以外,有时还用于确定某一制品是否在规定的重量允差范围以内,或是把制品按重量差别分类并作出标记。比如,在国防工业中,制造炮弹时,对每发炮弹都规定有弹重允差范围。尽管这个允差值不大,但是,对炮弹的命中率影响还是很大的。 In all sectors of the national economy, scales are one of the most commonly used measuring instruments. Scales are sometimes used to determine whether an article is within the specified weight tolerance, or to classify and mark the article as a weight difference, in addition to weighing the weight. For example, in the defense industry, shell shells are provided with a range of shell weights for each shell. Although this tolerance is not large, but the impact on the shell hit is still great.