ISO 17123-7
Optics and optical instruments - Field procedures for testing geodetic and surveying instruments - Part 7: Optical plumbing instruments
Optik und optische Instrumente - Feldverfahren zur Untersuchung geodätischer Instrumente - Teil 7: Lotinstrumente
Responsible national committee
NA 005-03-04 AA - Geodetic and surveying instruments (national mirror committee for ISO/TC 172/SC 6)