Roth's calculating machine, invented and patented by D.J. Wertheimber in 1843, English currency version,
Didier Roth returned to the basic design of Blaise Pascal for this simple stylus-operated adding machine. It did not receive much interest. This particular example is modified to add English currency.
- Object Number:
- adding machines
- Court, Thomas Henry
Cite this page
We encourage the use and reuse of our collection data.
Data in the title, made, maker and details fields are released under Creative Commons Zero
Descriptions and all other text content are licensed under a Creative Commons Attribution 4.0 licence
Download catalogue entry as json
View manifest in IIIF viewer
Download manifest IIIF
Our records are constantly being enhanced and improved, but please note that we cannot guarantee the accuracy of any information shown on this website.