These small Pyrometric Cones are used on a shelf inside a kiln or in a kiln sitter to determine when a firing is complete, if the kiln provided enough heat or if there was a problem during the firing. These Orton cones are made from carefully controlled compositions so that they bend in a repeatable manner over a very small temperature range. When used in a cone holder the cone tip reaches a point level with the base indicating it is properly fired. The cones can also be used in a kiln sitter with equally accurate results. Cones have been used in ceramic firings for more than 100 years and Orton has the history and experience to provide the very best product. This offer includes two boxes of 50 cones each for a total of 100 cones. The number of this cone is 015 which bends at an approximate temperature of 1549 degrees Fahrenheit depending on firing conditions.
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