Pyrometric cones measure heat-work (the effect of time and temperature). Pyrometric cones are slender pyramids made from about 100 carefully controlled compositions. Each cone number is unique in measuring temperature within a small temperature range (less than 30°C). Cones measure the amount of heat absorbed. As the cone nears its maturing range, it softens and the tip begins to bend, drawn down by the influence of gravity. Self-supporting cones are wider at the base than regular large cones and will sit on the kiln shelf at the correct angle with no added clay base. Box of 50. Click Here to Download a Temperature Chart for FahrenheitClick Here to Download a Temperature Chart for Celsius
