Small Orton Pyrometric Cones
Small (Junior) Cones measure 1 1/8" high and Bars are 1" long. Both are used in a Dawson Kiln-Sitter although small cones can also be used in cone plaques. When the selected Cone or Bar melts, it activates a trigger which turns the kiln off. The use of a kiln-sitter does not eliminate the use of large cones as they should be used as "witness" cones to determine temperature variations throughout the kiln and the accuracy of the kiln-sitter.