<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31398123</termId><termName>spirit levels</termName><termType>PT</termType><termNote><![CDATA[ Devices for determining true horizontal or vertical angles by the centering of a bubble with a glass tube or circular case filled nearly to capacity with alcohol or ether. ]]></termNote><termCreatedDate>2026-03-30 20:47:02</termCreatedDate><relation><relationType>UF</relationType><termId>31398124</termId><termName>level, spirit</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31398125</termId><termName>levels</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31398126</termId><termName>levels, spirit</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31398127</termId><termName>spirit level</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31358233</termId><termName>angle measuring devices</termName><termType>PT</termType></relation></term>  </Zthes>