<?xml version="1.0" encoding="utf-8"?><mads xmlns="http://www.loc.gov/mads/" xmlns:mods="http://www.loc.gov/mods/v3" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.loc.gov/mads/
mads.xsd"><authority><topic authority="http://AATesaurus.cultura.gencat.cat/aat/getty_en">meridian circles</topic></authority><related type="broader"><topic>astronomical instruments</topic></related><variant type="other"><topic>meridian circles</topic></variant><variant type="other"><topic>circles, meridian</topic></variant><variant type="other"><topic>meridian circle</topic></variant> <note xml:lang="en"><![CDATA[ Historical term for telescopes, each equipped with a graduated circle, by which the right ascension and declination of stars can be observed in transit. ]]></note></mads>