"Thomas de Colmar
"
models
"Payen" models
Other arithmometers
"Children" of Thomas de Colmar
Archimedes
Austria
Bunzel / Delton
Burkhardt
Gräber
Idéal
Layton
Liliput
Madas
Peerless
Procento
Reuters
Saxonia
Shires
Tate
Tim
XxX
www.arithmometre.org
2013