<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31456195</termId><termName>engineer&apos;s blue</termName><termType>PT</termType><termNote><![CDATA[ An oily film of Prussian blue pigment formerly used in machine making; it was placed on machine fittings, then the parts were rubbed together; the removal of the pigment indicated the position of high spots or rubbing between the two surfaces. ]]></termNote><termCreatedDate>2026-03-30 21:02:48</termCreatedDate><relation><relationType>UF</relationType><termId>31456196</termId><termName>blue, engineer&apos;s</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31437399</termId><termName>Prussian blue</termName><termType>PT</termType></relation></term>  </Zthes>