...temperature. For practical purposes these cones are considered sufficiently accurate. In actual use they are placed in the kiln at a point where they can be watched through a peep-'hole but at the same time will not receive the direct touch of the flame from the fuel. It is always well...

...to within 25°, which is entirely sufficient for practical purposes. In actual use the cones are set in the kiln at a point where they can be watched through a peep-hole but will not receive the direct touch of the flames from the fuel. It is well to put two or more cones...

...temperature. For practical purposes these cones are considered sufficiently accurate. In actual use they are placed in the kiln at a point where they can be watched through a peep hole, but at the same time will not receive the direct touch of the flame from the fuel. It is...

...temperature. For practical purposes these cones are considered sufficiently accurate. In actual use they are placed in the kiln at a point where they can be watched through a peep hole but at the same time will not receive the direct touch of the flame from the fuel. It is...

...used. FIG. 1. — SEGER'S PYRAMIDS, SHOWING THE ACTION OF HIGH TEMPERATURE. In actual practice they arc placed in the kiln at a point where they can be watched through a peep-hole and are protected from the direct touch of the flame from the fuel. It is always well to put two or...

...pure ferric oxide. The series consists of 58 members, the lowest one having a fusion point of 1,09-4° F. (590° C.), and- the highest 3,362° F. (1,850°...members are put in, for example, 05, 1, and 5. If cones 06 and 1 are melted in the burning, but 5 is not affected, it indicates that the temperature was between...

...temperature. For practical purposes these cones are considered sufficiently accurate. In actual use they are placed in the kiln at a point where they can be watched through a peep-hole but at the same time will not receive the direct tQuch of the flame from the fuel. It is always well...

...temperature. For practical purposes these cones are considered sufficiently accurate. In actual use they are placed in the kiln at a point where they can be watched through a peep-hole but at the same time will not receive the direct touch of the flame from the fuel. It is always well...

...temperature. For practical purposes these cones are considered sufficiently accurate. In actual use they are placed in the kiln at a point where they can be watched through a peep-hole but at the same time will not receive the direct touch of the flame from the fuel. It is always well...

...temperature. For practical purposes these cones are considered sufficiently accurate. In actual use they are placed in the kiln at a point where they can be watched through a peep-hole but at the same time will not receive the direct touch of the flame from the fuel. It is always well...