Ercker Prints

Athanor or Slow Harry, a self-feeding furnace maintaining a constant temperature
From £69.98

Athanor or Slow Harry, a self-feeding furnace maintaining a constant temperature
From £69.98

Furnace for processes where protracted heat required
From £69.98

Washing ore to extract gold. Water fed into sieve (2) containing ore
From £69.98

Distillation of Nitric Acid. Also known as Aqua Fortis or Parting Acid
From £69.98

Production of Salpetre (Nitre, Potassium Nitrate)
From £69.98

Assayer testing samples of gold or silver using a balance, 1574 (engraving)
From £69.98

Blast furnaces, 1580 (engraving)
From £69.98

Preparation of copper and silver to be alloyed for production of coins
From £69.98

Refining copper by Hungarian process, 1580 (engraving)
From £69.98

Smelting of copper: making liquation cakes by reducing copper in furnaces and alloying with lead
From £69.98

Crystallization of Saltpetre (Nitre, Potassium Nitrate, or KN03, 1574 (engraving)
From £69.98

Laboratory for refining gold and silver
From £69.98

Washing ore to extract gold, 16th century (engraving)
From £69.98

Checking the quality of Saltpetre (Nitre)
From £69.98

Printed to Order and Licensed for Personal Use