Multiplier & Quotient

One digit systems
     
Dial (1820)
Cursor (1822-1848-1850)
Pointer (1856)
     
Multi digits systems
     
Pointers counter (1851)
Windows (1855)
Windows (1858-1907)
 
Prototype of a multiplier, circa 1880
 

 

www.arithmometre.org
2013