<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31398181</termId><termName>spherometers</termName><termType>PT</termType><termNote><![CDATA[ Devices used to measure the curvature of spherical or other curved surfaces. ]]></termNote><termCreatedDate>2026-03-30 20:47:03</termCreatedDate><relation><relationType>UF</relationType><termId>31398182</termId><termName>spherometer</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31358242</termId><termName>size measuring devices</termName><termType>PT</termType></relation></term>  </Zthes>