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

Mechanisms

Glossary

Other calculating devices

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Acknowledgements

Wanted

  
Monroe Mach 1.07        
 
Manufacturer
   Monroe Calculating Machine Co.
Amsterdam, Holland
 
Mechanism
   oscillating rack
 
Capacity
   15
 
Years produced
    
 
Price when new
   $ in 1964
 
Size (W x D x H)
   in.
cm.
 
Weight
   lb. oz. (kg)
 
Features
   high speed multiplication
back transfer
  click on photo to enlarge    
         
This machine was originally produced by Oerlikon of Switzerland as the Ultra 804. Monroe purchased the rights to the design and produced it in their Holland factory. It features high speed (800 rpm) multiplication, although division cycle speeds are much lower. Late in the 1960’s this machine was restyled and sold as the Monroe 570.