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circular horizontal plate of a theodolite, accurately divided so that horizontal angles can be precisely measured, teodoliidi ümmargune horisontaalne kriipskaalaga plaadiring/-limb horisontaalnurkade mõõtmiseks
horizontal circle . Metroloogia terminibaas. Estonian Language Institute, Sõnaveeb 2026. https://sonaveeb.ee/search/unif//mea/horizontal%20circle/1/eng (06.08.2026)