ISO 9849:2017仅定义了与大地测量现场仪器相关的术语，例如测距仪、水准仪、经纬仪等，以及通常用于军械测量、地形测量、平面测量和工程测量的地面测量操作中的基本组成部分。因此，以下领域的术语未提及，例如摄影测量、天文学、水文测量和工业计量。 不涉及仪器运行不需要的附件。 这些术语按英文字母顺序排列。

ISO 9849:2017 defines terms relating to geodetic field instruments only, e.g. distance meters, levels, theodolites and others, and their essential component parts which are normally used in terrestrial measuring operations of ordnance survey, topographic survey, plane survey and engineering survey. Therefore, terms concerning fields such as the following are not mentioned, for example, photogrammetry, astronomy, hydrographic survey and industrial metrology. Accessories which are not necessary for the functioning of the instruments are not dealt with. The terms are arranged in English alphabetical order.