Mathematical Instruments
Mechanical Instruments for Drawing, Measuring and Integrating
Drafting Instruments
Calculating Discs and Drums
Alfred J. Amsler & Co.
Gottlieb Coradi
Haag-Streit
Hünenberger-Murbach
History
Catalogs and Price Lists
Manuals
Jakob Goldschmid
Kaspar Wetli
Planimètre construit par K. Murbach. Zurich (ca. 1950).
