Pyrometric Cones- Small (Orton Ceramics)

Pyrometric Small Cones are commonly used in the Kiln-Sitter®. The tapered shape allows some flexibility to adjust shut-off by placing the thinner or thicker portion of the cone under the sensing rod.

​Small Cones can also be used on the kiln shelf as miniature witness cones when space is limited. They require mounting in cone holders or plaques at an 8° angle and a width of 15/16 of the cone exposed above the cone holder. Small Cones used on the kiln shelf deform at about 9°F after Large or Self-Supporting Cones of the same number.

​Cone numbers 12 and higher are also available as PCE cones.

​In 2016, Orton began packaging Small cones in pairs like Large and Self-Supporting cones. We made the change to reduce the number of cones broken during shipping.