Set of four boxes of technical drawing instruments. E.O. Richter & Co., Thiele and Cornelius Knudsen, ca. 1920.

Set of four boxes of technical drawing instruments. E.O. Richter & Co, Thiele and Cornelius Knudsen. England, Denmark and Germany, ca. 1920.
Complete.
Brass and steel instruments.
In their original imitation leather cases.
The boxes have flaws and flaws.
Measurements: 2 x 18 x 6 cm (the largest case).

Four cases of technical drawing instruments and compasses made of steel and brass. The cases, in different sizes, are made of imitation leather in different shades. The interiors are lined with velvet. Compasses of various types, adapters and technical nibs are included. All instruments fit in their specific housing. The cases retain all their parts, in functional condition. Cases with wear and tear typical of use and of the period. The damage does not affect the condition of the instruments.

Three of the cases preserve the marks: E.O. Richter & Co., Thiele and Cornelius Knudsen.

E.O. Richter & Co., founded in Saxony, Germany, became one of the world's leading manufacturers of compasses and technical drawing utensils, noted for its innovation, such as the development of the eccentric mustache holder.

Cornelius Knudsen was a manufacturer of scientific instruments based in Copenhagen, Denmark. The company gained international fame and its instruments were used in several polar expeditions. The company was founded on March 10, 1838 by Jens Cornelius Knudsen (1807-1879). At first, the company was based in Gråbrødretorv, but in 1845 it moved to a building on the corner of Købmagergade and Løvstræde. Knudsen's son, Theodor Valdemar Cornelius Knudsen (1844-), served as a cadet on the corvette Heimdal in 1860. He befriended Prince William, later George I of Greece, who also served as a cadet on the ship. Back ashore, he initially worked in his father's workshop and then attended classes at the College of Technology. He ran the family business from 1870 and continued it alone after his father's death. On May 27, 1884, he changed his surname to Cornelius-Knudsen. From 1895, the company was headquartered at Købmagergade 15. The old building was replaced by a new Domus Optica in 1946-1947. The product range covered optical, navigation and surveying instruments, planimeters and telegraph equipment.