Inside Out Library · Explore
Scientific American, Vol. 46, No. 1 (January 1882) (1882)
leaf 1
well. pire, the art of engraving on gems met with the same fate. The diamond used on the wheels is crushed and powdered It was revived in Italy in the beginning of the fifteenth cen- which consists essentially of a stiff piece of white cardboard, in the steel mortar shown in one of the smaller… … history. which carbonizes ENGRAVING PRECIOUS STONES. © 1882 SCIENTIFIC AMERICAN, INCPatented · Patents · Boiler · Engraving · Iron · Consists · Pivoted · Longitudinal seams · Illustrated catalogue · Scientific American · Cap bar · Side bars · Trade catalogs · Carrying power · Grate bars · Inch hole · Feed water
Internet Archive · Public domain (published before 1931). Free to use for anything.
More pictures from Scientific American, Vol. 46, No. 1 (January 1882)
More like this
