These lamps were originally used in areas which were suited in explosion sensitive areas. Oririnally of East German design. Produced from the 60s until the 80s and were used in laboratories, ships and mines. The glass is 10mm thick pyrex glass which is splash-, gas- and dust proof. Then for safety, now for a cool industrial look in your restaurant, cafe or bar. Of course, we have fitted the lamp with an energy efficient LED light which fits the modern standards.