水准仪是大地测量仪器中的主要产品。近几年发展比较快，全国已有近20家生产厂，其中有几家是国外独资企业。水准仪产量日益增长，并大量出口国外。为能积极参与国际市场竞争，适应国际贸易、技术和经济交流的需要，目前国内产品的系列、技术指标、试验方法应在对照国外产品的 Level is the main product in geodetic instruments. In recent years, the rapid development of the country has nearly 20 manufacturing plants, of which several are wholly foreign-owned enterprises. Level of production is growing, and a large number of exports abroad. In order to actively participate in the international market competition and adapt to the needs of international trade, technology and economic exchange, the current series of domestic products, technical indicators, test methods should be in control of foreign products