Pyrometric cones are pyrometric devices that are used to gauge heatwork during the firing of ceramic materials. The cones, often used in sets of three as shown in the illustration, are positioned in a kiln with the wares to be fired and provide a visual indication of when the wares have reached a required state of maturity, a combination of time a...
[n] - a pyrometer consisting of a series of cones that melt at different temperatures
A slender trihedral pyramid made of a mixture of minerals similar in composition to that of a clay or other refractory being tested. Each cone is assigned a number indicating its fusion temperature.
heat indicators in the form of sticks/bars or elongated pyramids of ceramic materials which deform/bend at a given temperature range with time enabling the potter to determine when the firing is complete.
noun a pyrometer consisting of a series of cones that melt at different temperatures
(in a kiln) a triangular piece of material that indicates by bending or melting that a certain temperature has been reached.