hardening Stock Photos and Stock Footage

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View a hardened plate 15 centimeters thick, prepared in a special process after, presented by the Terni plant, vintage engraved illustration. Industrial encyclopedia E.-O. Lami - 1875.

View a hardened plate 15 centimeters thick, prepared in a special process...

Solidification of mercury in the nitrous oxide, vintage engraved illustration. Magasin Pittoresque 1870.

Solidification of mercury in the nitrous oxide, vintage engraved...