<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31325918</termId><termName>light measuring devices</termName><termType>PT</termType><termNote><![CDATA[ Devices used to measure electromagnetic radiation. ]]></termNote><termCreatedDate>2026-03-30 20:27:50</termCreatedDate><relation><relationType>UF</relationType><termId>31325919</termId><termName>light measuring device</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31325920</termId><termName>measuring devices, light</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31307801</termId><termName>measuring devices for phenomena</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>31358527</termId><termName>color measuring devices</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>31358530</termId><termName>light absorption measuring devices</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>31358533</termId><termName>photometers</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>31358536</termId><termName>polariscopes</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>31358538</termId><termName>refractometers</termName><termType>PT</termType></relation></term>  </Zthes>