High quality, reliable Pyrometric Cones have been sold by Orton since 1896 to monitor and control the firing of ceramic and glass products.
Orton Standard Pyrometric Cones and Bars are an easy and effective tool for checking the amount of heat work applied by the kiln.
Orton self-supporting or large cones can be placed inside a kiln where they can be observed through a peephole, or on various shelves or locations inside a kiln to check the uniformity of the kiln temperature after firing.
When cones soften and bend, this indicates that a certain amount of heat has been absorbed by the cone and hence, the ware being fired.
Download Cones & Firing Booklet