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The Orton SRB Small Cones, Box of 50 are 1-1/8” tall.
Small Cones from Orton, also known as Kiln Sitter Cones or junior cones, can be used as miniature witness cones when space is limited.The tapered shape of these cones allows for some flexibility to adjust the shut-off temperature by placing the thinner or thicker part of the cone under the sensing rod.
Pyrometric cones gauge heatwork, which is the combination of heat and time, inside a kiln.
They work by contracting, or deforming, in the intense heat of the kiln.
The cones correspond to a specific cone number, and when the desired heat and temperature is reached, the cone tip will bend forward to the same level as the base.
For best results, have one cone higher and one lower in the kiln as well.
These cones need a holder to support them.