Drill Press Dynamometer, Iron Test Blocks, and Chip Pile | University of Illinois Archives
Drill Press Dynamometer, Iron Test Blocks, and Chip Pile
Sepia tone photograph showing drill press and test blocks. Caption indicates that chip pile was produced in one hour using a 1" drill bit.
Found in RS 11/1/10, Vol. 3
Image Measures 16.2 x 11.5 cm
University of Illinois Archives
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