Numeria electrical calculating machine
1955-1965
Monroe calculating machine
1929
Lindstrom Record manual calculating machine
1913
Calculating machine invented by Charles Stanhope in 1777, with mahogany case
1777
Calculating machine invented by Charles Stanhope
1775
Archimedes, Model H, manual calculating machine
1950-1955
Monroe calculating machine miniature model
1930
Lagomarsino-Numeria manual calculating machine
1960-1970
Monromatic model electric calculating machine by Monroe Calculating Machine Company Inc.
1960-1965
Electromechanical calculating machine by Heinrich Diehl GmbH
1955-1965
Miniature Monroe calculating machine
1960-1965
Monroe manual calculating machine
1960-1970
Flying Fish manual calculating machine
1965-1970
Diehl electromechanical calculating machine
1955-1965
Diehl, model V18
1955-1965
Muldivo electric calculator
1935-1950
Stripped model of a "Curta" pocket calculating machine with cylindrical metal case
1950-1951
Monroe 88N-213 full keyboard electric desktop calculator
1950-1965