Object Details
- Description
- In this linkage, three short brass rodss connect a fixed brass rod to a moveable one. The fixed rod is at the center. A drawing pin attached at the lower end of the moving rod describes a plane disc. The pin can trace any curve within the disc.
- A paper label on the base reads: Planigraph. (/) 32. Serie, Nr. 6. (/) Verlag v. Martin Schilling, Leipzig.
- This instrument was based on discoveries of Professor Gaston Darboux (1842-1917) and on the design of Professor Gabriel Xavier Paul Koenigs (1858-1931), both of Paris. It was part of a series of models by Schilling first published in 1906 and 1908, and marketed as illustrating principles of kinematics and physics.
- References:
- Gabriel Koenigs, Leçons de Cinématique Professé à la Sorbonne, Paris: Hermann, 1897, pp. 295-297.
- M. Schilling, Catalog mathematicher Modelle, Leipzig, 1911, pp. 88, 166-167.
- Location
- Currently not on view
- Data Source
- National Museum of American History
- date made
- ca 1910
- Credit Line
- Gift of the Department of Mathematics, The University of Michigan
- Physical Description
- metal (mechanism material)
- wood (base material)
- paper (label material)
- Measurements
- overall: 39 cm x 22.7 cm x 18.7 cm; 15 11/32 in x 8 15/16 in x 7 3/8 in
- Object Name
- drawing instrument
