Pyrometric cones have been used to monitor ceramic firings for more than 100 years. They are useful in determining when a firing is complete, if the kiln provided enough heat, if there was a temperature difference in the kiln or if a problem occurred during the firing. Cones are made from carefully controlled compositions. They bend in a repeatable manner (over a relatively small temperature range - usually less than 5°C). The final bending position is an indication of how much heat was absorbed.
Download our Temperature Equivalent Chart in °C and °F for Orton Pyrometric Cones >HERE<