Worcester Polytechnic Institute
University Photograph Collection (UA 001)
Illustration of the principle of butt welding, distance calculations, and welding time/distance relational graph. From the lecture slides for Iron Carbon System (Steel) of faculty member Carl G. Johnson
Digital image captured from photograph, negative, or slide held in Archives & Special Collections.
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Johnson, Carl G., "Principle of Butt Welding" (2013). WPI Historical Images. Paper 618.
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