<?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">plumb bobs</topic></authority><related type="broader"><topic>angle measuring devices</topic></related><variant type="other"><topic>bob, plumb</topic></variant><variant type="other"><topic>bobs, plumb</topic></variant><variant type="other"><topic>plumb bob</topic></variant><variant type="other"><topic>plummets</topic></variant> <note xml:lang="en"><![CDATA[ Weights to be suspended from one end of plumb lines to determine verticality or to aid in locating points on the ground during surveying. ]]></note></mads>