Electromechanical calculating machines from the 1960's
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Rotary calculators

Printing calculators
Friden 1217
Lagomarsino Totalia S4GT
Marchant 416-S
Monroe 570
Monroe 580
Monroe Mach 1.07
Monroe PC-1421
Olivetti Divisumma 26
Olivetti Logos 27-2
Olivetti Tetractys
Precisa 166
Victor 73-85-54
Victor 79-88-54
Victor 10-871
Walther Diwa 32



Other calculating devices

References and links



Friden 1217        
  Friden Inc.
San Leandro, California, USA
  oscillating rack
  8 x 12 x 17
Years produced
  1967 to 1969 (?)
Price when new
  $795 in 1967
Size (W x D x H)
  lb. oz. (kg)
  visible entry register
shortcut multiplication
back transfer
  click on photo to enlarge    

Although many adding machines were made by Friden, this is their only four-function printing calculator. While Monroe and Marchant supplemented their line of calculators with rebadged European machines, Friden designed and produced all their machines in house. It was not introduced until 1967, the final years for mechanical calculators. This is a very large machine, styled to match the R-line rotary calculators. The ten-key number entry uses the same mechanical display as the rotary calculators to show the number before entry. Although a memory is claimed for the machine, it only allows direct access to the control register, so it would be useless for any memory problems with require intermediate multiplication.

My sincere thanks to Jake and Joel Jacobs for the donation of this machine