a website collaboration between Science Service and the Smithsonian Institution

1938 - close up of specially designed electric furnace


CD1963014 E&MP19.014

Electric Furnaces

January 1938

Close up of specially designed electric furnace used by research scientists of the United States Steel Corporation in creep test on steel specimens.

A unique feature of this furnace is that creep test readings may be made by a single microscope, as a result of placing reference marks on tiny platinum cubes embedded in fingers attached to either end of the specimen in such a manner that both come within the vision range of the microscope.

In addition, pinions alongside of the furnace make it possible to use a portable microscope.

Heretofore, two microscopes, one focused on either end of a specimen, were the usual practice.

An electrical outlet is also available at each furnace for plugging in the microscope light. 

Original Caption by Science Service
United States Steel Corporation

National Museum of American History


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