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116 to 120 of 227 glossary terms
mariner's astrolabe: altitude-measuring instrument for finding latitude at sea, having a heavy brass or bronze ring, suspended by a shackle and ring, with a degree scale and a centrally-pivoted alidade.
mater: part of an astrolabe, see article on the astrolabe.
mathematical compendium: compound instrument for performing various functions in practical mathematics.
mathematical instruments: collections of instruments of assorted kinds for performing functions in practical mathematics.
measuring rod: an instrument used to measure distances or depths. See also gauging rod.
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