Orton Cones: Small Cones - 020 Kilns OLYMPIC KILN 186GFETLC FURNITURE KIT

OLYMPIC KILN 186GFETLC FURNITURE KIT

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Orton Cones: Small Cones - 020 Kilns OLYMPIC KILN 186GFETLC FURNITURE KITORTON SMALL CONES 020 : Box of 50 Orton cones, pyrometric cones or witness cones are for accurate kiln firing. Order online from Sheffield Pottery Ceramic Supply. Orton Pyrometric Cones for Ceramic Arts Pyrometric cones measure heat work (the effect of time and temperature). Orton Pyrometric cones are slender pyramids made from about 100 carefully controlled compositions. Each cone number is unique in measuring temperature within a small temperature