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一种新型的无导轨大长度测量仪于1985年11月3日经鉴定通过。无导轨大长度测量仪是由中国计量科学研究院研制成功的。它可广泛应用于飞机制造、大型机器的加工和安装、测距以及军事用途上。和其它类型的大长度测量仪不同,它不需要使用导轨;采用实时频率测量和复现拍波波长使之符合的米的新定义;在国内外首创应用塞曼效应于稳定激光共轴双纵模输出,并用拍波干涉实现大长度的测量,从而使仪器具有结构简单、操作方便、可用于生产现场等优点。仪器对 1～75m范围内空间的任何尺寸作直
A new type of non-rail length gauge was approved on November 3, 1985. Non-rail length meter is developed by China Institute of Metrology. It can be widely used in aircraft manufacturing, processing and installation of large machines, ranging and military applications. Unlike other types of large length gauges, it does not require the use of rails; it uses a new definition of meters that meet real-time frequency measurements and reproduce the beat wave lengths; pioneered the application of the Zeeman effect at home and abroad to stabilize the laser in both directions Mode output, and beat-wave interference to achieve large-length measurements, so that the instrument has a simple structure, easy operation, can be used for the production site and so on. The instrument of 1 ~ 75m range of space for any size straight