Wikimedi'Òc

Burroughs adding machine - Ridai Museum of Modern Science, Tokyo - DSC07540.JPG - Daderot

Bell Punch 506D adding machine - Ridai Museum of Modern Science, Tokyo - DSC07529.JPG - Daderot

Comptometer adding machine - Ridai Museum of Modern Science, Tokyo - DSC07532.JPG - Daderot

Comptometer adding machine - Ridai Museum of Modern Science, Tokyo - DSC07531.JPG - Daderot

Comptometer adding machine - Ridai Museum of Modern Science, Tokyo - DSC07530.JPG - Daderot

Comptometer adding machine - Ridai Museum of Modern Science, Tokyo - DSC07533.JPG - Daderot

Comptometer adding machine - Ridai Museum of Modern Science, Tokyo - DSC07534.JPG - Daderot

Corona adding machine - Ridai Museum of Modern Science, Tokyo - DSC07535.JPG - Daderot

Dalton adding machine - Ridai Museum of Modern Science, Tokyo - DSC07538.JPG - Daderot

NCR adding machine - Ridai Museum of Modern Science, Tokyo - DSC07537.JPG - Daderot

R. C. Allen adding machine - Ridai Museum of Modern Science, Tokyo - DSC07536.JPG - Daderot

Sumlock adding machine - Ridai Museum of Modern Science, Tokyo - DSC07528.JPG - Daderot

Underwood Sundstrand adding machine - Ridai Museum of Modern Science, Tokyo - DSC07539.JPG - Daderot

Corona adding machine - Ridai Museum of Modern Science, Tokyo - DSC07546.JPG - Daderot

Burroughs adding machine - Ridai Museum of Modern Science, Tokyo - DSC07543.JPG - Daderot

Dalton adding machine - Ridai Museum of Modern Science, Tokyo - DSC07542.JPG - Daderot

Victor adding machine - Ridai Museum of Modern Science, Tokyo - DSC07547.JPG - Daderot

Olivetti Summa Prima 20 adding machine - Ridai Museum of Modern Science, Tokyo - DSC07549.JPG - Daderot

Remington Rand adding machine - Ridai Museum of Modern Science, Tokyo - DSC07548.JPG - Daderot

Odhner adding machine - Ridai Museum of Modern Science, Tokyo - DSC07569.JPG - Daderot