Mathematical Instruments
Mechanical Instruments for Drawing, Measuring and Integrating
Drafting Instruments
Calculating Discs and Drums
Alfred J. Amsler & Co.
History
Serial Numbers
Catalogs and Price Lists
Manuals
Various Documents
Patents
Gottlieb Coradi
Haag-Streit
Hünenberger-Murbach
Jakob Goldschmid
Kaspar Wetli
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