1890 Article Pyrogravure Fire Engraving Tools M. Manuel Perier Vintage MAB1 XET8 VENA3A9C29 zz10000

VENA3A9C29 zz10000

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1890 Article Pyrogravure Fire Engraving Tools M. Manuel Perier Vintage MAB1 XET8 VENA3A9C29 zz10000This is an original 1890 one page and a half (1 page, double sided) article about the Pyro engraving tools, made by M. Manuel Perier, a Frenchman. Mr. Perier began his experiments with small soldering irons heated by gas, and afterwards substituted for these a platinum wire kept incandescent for these a platinum wire kept incandescent with the aid of the electric current. The system of thermo cautery devised by Dr. Paquelin gave M. Perier the clue to