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3. 3. ISO 17123-4:2012. Optics and optical instruments - Field procedures for testing geodetic and surveying instruments. Part 4: Electro-optical distance meter (EDM measurements to reflectors).
4. 4. JCGM 100:2008 Evaluation of Measurement Data-Guide to the Expression of Uncertainty in Measurement. Joint Committee for Guides in Metrology. Retrieved from: https://www.bipm.org/utils/common/documents/-jcgm/JCGM_100_2008_E.pdf
5. 5. JCGM 200:2012 International vocabulary of metrology - Basic and general concepts and associated terms (VIM). Joint Committee for Guides in Metrology. Retrieved from: https://www.bipm.org/utils/common/documents/-jcgm/JCGM_200_2012_E.pdf