<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31420227</termId><termName>circular slide rules</termName><termType>PT</termType><termNote><![CDATA[ Calculating devices of the slide rule type, but having a circular rather than straight form; they comprise disks that form circular scales located in one plane. ]]></termNote><termCreatedDate>2026-03-30 20:53:12</termCreatedDate><relation><relationType>UF</relationType><termId>31420228</termId><termName>circular slide rule</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31420229</termId><termName>circular slide-rules</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31420230</termId><termName>slide rules, circular</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31385545</termId><termName>slide rules</termName><termType>PT</termType></relation></term>  </Zthes>