1. ISO/DIS 17123 Optics and optical instruments: field procedures for testing surveying and surveying instruments, Part 1–6 (2000).
2. K. Zeiske, Current status of the ISO standardization of accuracy determination procedures for surveying instruments, Technical conference during the FIG Working Week, Seoul, Korea (2001).
3. DIN 18723-1, Field procedure for precision testing of surveying instruments (1990).
4. ISO 8322, Building construction—measuring instruments—procedures for determining accuracy in use, Part 1–8 (1992).
5. ISO 9849, Optics and optical instruments: surveying and surveying instruments: vocabulary (2000).