Cones

Orton Junior ConesPyrometric cones measure heat-work (the effect of time and temperature).

Pyrometric cones are 1 inch long slender pyramids made from about 100 carefully controlled compositions. The can be used in a kiln sitter. 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. 50 bars per box.

Orton Self-Supporting ConesPyrometric cones measure heat-work (the effect of time and temperature).

Pyrometric cones are 2.5 inch 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. 25 cones per box.

Orton Mini-Bars
Pyrometric bars measure heat-work (the effect of time and temperature).

Pyrometric bars are designed for use in a kiln sitter as are made from about 100 carefully controlled compositions. Each 1 inch bar has a number that is unique in measuring temperature within a small temperature range (less than 30°C). Bars measure the amount of heat absorbed. As the bar nears its maturing range, it softens and begins to bend, drawn down by the influence of gravity. 50 bars per box.

Orton Large ConesPyrometric cones measure heat-work (the effect of time and temperature).

Pyrometric cones are 2.5 inch 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. 50 cones per box.