Ceramic cones are slender pyramids made from selective compositions, calibrated to bend at different temperatures. Each cone is unique in that it measures temperature at a specific temperature and hence they are numbered. Similar to heat rings, Pyrometric cones too, measure the amount of heat work and are useful to monitor kiln performance. As the cone nears its maturing temperature, it softens and the tip begins to bend, drawn down by the influence of gravity. It typically takes about 20 minutes for the cone to bend fully.
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Masab Tank, Hyderabad, Telangana