最終更新日：2024/07/29

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(ecclesiastical, obsolete) A archbishop's cross. / (historical) An early instrument, consisting of a wooden rod with a sliding crosspiece, used for measuring the altitude of a star or for surveying.

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cross-staff

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cross-staff

noun

(ecclesiastical, obsolete) A archbishop's cross. / (historical) An early instrument, consisting of a wooden rod with a sliding crosspiece, used for measuring the altitude of a star or for surveying.