The copperplate roller-press was invented in 1545.
Etching on copper by means of aqua-fortis invented by F. Mazzuoli or Parmegiano, A. D. 1532.
Mezzotinto engraving invented by De Siegen, 1643; improved by Prince Rupert, 1648; and by Sir Christopher Wren, 1662.
Mr. Evelyn showed me most excellent painting in little [miniature]; in distemper, in Indian incke, water-colours : graveing; and, above all, the whole secret of mezzo-tinto, and the manner of it, which is very pretty, and good things done with it. — Pepys's Diary, Nov. 1, 1665.
At Gresham College, the Royal Society meeting, Mr. Hooke explained to Mr. Pepys the art of drawing pictures by Prince Rupert's rule and machine and another of Dr. Wren's [Sir Christopher]; but he [Dr. Hooke] says nothing do like squares, or, which is best in the world, like a dark room. — Pepys, Feb. 21, 1666.
These devices are apparently for copying; the former is probably on the principle of the pantograph; the squares is a familiar mod