Editing Pyrometric cone (section)

== Definition ==
The pyrometric cone is "A pyramid with a triangular base and of a defined shape and size; the "cone" is shaped from a carefully proportioned and uniformly mixed batch of ceramic materials so that when it is heated under stated conditions, it will bend due to softening, the tip of the cone becoming level with the base at a definitive temperature. Pyrometric cones are made in series, the temperature interval between the successive cones usually being 20 degrees Celsius. The best known series are Seger Cones (Germany), Orton Cones (USA) and Staffordshire Cones (UK)."<ref>{{cite book|last=Dodd and Murfin|first=A. and D.|title=Dictionary Of Ceramics. 3rd edition|year=1994|publisher=Institute of Materials. Woodhead Publishing Limited|location=Cambridge|isbn=0-901716-56-1}}</ref><ref>[https://archive.today/20140806203552/http://www.ortonceramic.com/resources/pyrometric-cones/comparative-data/ Edward Orton Jr. Ceramic Foundation]</ref>