<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31398259</termId><termName>sclerometers</termName><termType>PT</termType><termNote><![CDATA[ Instruments used to determine the hardness of materials by measuring the pressure needed to scratch, indent, or pierce the materials. ]]></termNote><termCreatedDate>2026-03-30 20:47:04</termCreatedDate><relation><relationType>UF</relationType><termId>31398260</termId><termName>sclerometer</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31358256</termId><termName>densimeters</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>31428072</termId><termName>Scleroscopes (TM)</termName><termType>PT</termType></relation></term>  </Zthes>