🌐EnglishEnglishDeutschEspañolFrançaisItalianoNederlandsPolskiРусскийالعربيةEntityQ247300· pop 14· linked from 14 articlesPerforation gaugea philatelic tool used to measure perforationsWikidata factsImageOdontometer.jpgvia Wikidata · CC0Available in 13 languagesEspañolFrançaisDeutschРусскийItalianoBelarusianBretonEsperantoHungarianNederlandsPolskiConnectionsInternational Standard Book NumberEntityOCLC, Inc.EntityCategoriesPhilatelic terminologyStamp collecting