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
Jakob Goldschmid
Kaspar Wetli
History
Rack Railway System
Manuals
Various Documents
Page under Construction!