Cone plaque
Cones have been a traditional way of measuring the temperature ceramic kilns for many decades. Plaques are the setters that hold the cones at the right angle.
Details
A stand or rest for holding cones during firing. Plaques are important to assure that cones are placed at a consistent depth and angle firing after firing.
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Cone plaques and cones from a cone 10R firing at Plainsman Clays.