Two more translations are on my site
www.watkinsr.id.au
They are:
B. Hillmann "The keyless mechanism, a practical treatise on its design and repair". Well worth reading even if you don't repair watches.
Anon "Some notes on Pierre-Frederic Ingold and the work of E. Haudenschild". This gives some information about Ingold and the tools he designed for watchmaking. Although debatable, he may have had an influence on the early tools used at Waltham.
Both can be downloaded.
www.watkinsr.id.au
They are:
B. Hillmann "The keyless mechanism, a practical treatise on its design and repair". Well worth reading even if you don't repair watches.
Anon "Some notes on Pierre-Frederic Ingold and the work of E. Haudenschild". This gives some information about Ingold and the tools he designed for watchmaking. Although debatable, he may have had an influence on the early tools used at Waltham.
Both can be downloaded.