Six measuring instruments. Central Europe, late 19th - early 20th century.

Set of six measuring instruments. Central Europe, late 19th - early 20th century.
Consisting of four rulers (three for calculating), a square and a protractor.
Wood, brass, bone and leather.
Some pieces have their cases.
Exhibits wear consistent with age and use and some faults.
Measurements: 50 cm (wooden ruler).

This set represents a piece of technical heritage, not only for its manufacturing quality and completeness, but also as a material testimony of the rise of technical drawing as a fundamental discipline in engineering, architecture and technical education of the time.