Category:Heat treatment of carbon tool steels (1909)

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Media in category "Heat treatment of carbon tool steels (1909)"

The following 2 files are in this category, out of 2 total.

Heat treatment of carbon tool steels (1909) (14590984670).jpg 2,603 × 3,502; 2.97 MB
Heat treatment of carbon tool steels (1909) (14777344092).jpg 2,448 × 2,829; 2.41 MB

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