Electromechanical calculating machines from the 1960's
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Rotary calculators
Badenia VA-17
Badenia VARE-17
Bohn Contex 55
Cellatron R44SM
Diehl DSR-18
Diehl VSR-18
Facit CA1-13
Friden SBT
Friden SVE
Friden SRW
Friden SRQ
Friden RSR
Hamann 505
Madas 20 BTG
Marchant ABL
Marchant SKA DeciMagic
Marchant Tenkeymatic
Monroe IQ-213
Olympia RA-16

Soemtron 214

Printing calculators

Mechanisms

Glossary

Other calculating devices

References and links

Acknowledgements

Wanted

 
Friden SBT        
 
Manufacturer
  Friden Inc.
San Leandro, California, USA
 
Mechanism
  stepped drum
 
Capacity
  10 x 11 x 20
 
Years produced
   
 
Price when new
  $975 in 1965
 
Size (W x D x H)
  in.
cm.
 
Weight
  lb. oz. (kg)
 
Features
 

back transfer

  click on photo to enlarge    
         
Friden SBT