Orton Bars were specifically designed to function in the Kiln-Sitter®.
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The uniform shape makes consistent placement easy without affecting firing. The novice or beginner will welcome its ease of use, while those practiced in firing will appreciate the consistency. 50 per box.
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Pyrometric Bars have the same temperature equivalents as small cones.  So please refer to the Orton Cone Chart and use the small cone numbering system to determine your equivalant temperature.