[New York, N.Y. : The Aerial Age Company, Inc.] · leaf 94
Fig. 2. This furnace is lined on the bottom and sides, first Fig. 3. High Resistance Electric Pyrometer. with a half inch of asbestos, and then with heavy fire brick, 3% in. thick. The fire bricks on top, as shown in the cut, are movable in order that the opening over the crucible may did not…
Aeronautics -- Periodicals
Internet Archive · University of Illinois Urbana-Champaign · Public domain (published before 1931). Free to use for anything.
