Drawing instruments have been essential to mathematics, architecture, surveying, navigation, engineering design, and other technical endeavors from antiquity through the 20th century, ... when an ...

The instruments are of the best English design and finish, with knee joints and nut and bolt needle points where necessary. The Technical College Set of Mathematical Instruments. No. 727.

E. O. Richter & Co. of Chemnitz, Germany, sold mathematical instruments from 1885 but became notable from 1892 when it began making fine drawing instruments. See also 317925.04, 325684, 335301, and ...

This is a German composite set of brass drawing instruments dating from c.1600 presented in a green leather case. The set comprises many instruments including a protractor, set angle, large pencil ...