铁路是国民经济的大动脉。随着我国铁路现代化的发展,行车速度、运行密度和列车载重的不断增加,对铁道线路几何参数的要求愈来愈严,测量准确度的要求也愈来愈高。为适应我国铁路运输发展的需要,根据国家计量总局批准施行的TTG219—80《铁路轨距尺检定规程》试行的规定,由铁道部标准计量研究所和我厂共同研制的RTG—1型轨距尺,于1982年7月22日通过部级鉴定,1983年被国家经委 Railway is the main artery of the national economy. With the development of railway modernization in our country, the traffic speed, operating density and the train load are increasing. The requirements on the geometrical parameters of the railway line are getting more and more strict, and the requirements of the measurement accuracy are getting higher and higher. In order to meet the needs of the development of China’s railway transport, according to the provisions of the TTG219-80 “Regulations for the Verification of Railroad Gauge Regulations” approved by the State Administration of Metrology, the RTG-1 gauge developed jointly by the Institute of Standards and Metrology of the Ministry of Railways and our factory Ruler, on July 22, 1982 through ministerial identification, 1983 by the State Economic Commission