Addiator Duplex Tutorial - Addiator Duplexチュートリアル - YouTube
John Wolff's Web Museum - Slide Adding Machines
John Wolff's Web Museum - Slide Adding Machines
GoneVintage.com
Piccolo-S addiator calculator - MAAS Collection
Addiator Duplex Sterling - Addiator - MechaniCalculator
Angle/Time Calculators
Addiator - Wikipedia
ADDIATOR DUPLEX German Calculator in Case Pen - Etsy
Duplex-size - Addiator - MechaniCalculator
Duplex-size - Addiator - MechaniCalculator
TCoCD: Addiator Duplex
John Wolff's Web Museum - Slide Adding Machines
SUBTRACTION DUPLEX Addiator Adding Machine. | eBay
Addiator Duplex Addition Subtraction Manual Pocket Vintage Calculator F30 | eBay
File:Addiator DUPLEX calculator.jpg - Wikimedia Commons
ADDIATOR DUPLEX German Calculator in Case Pen - Etsy
John Wolff's Web Museum - Slide Adding Machines
Addiator Duplex Addition Subtraction Manual Pocket Vintage Calculator F30 | eBay
File:Addiator Duplex-Addition side.jpg - Wikimedia Commons
Addiator
Addiator - Etsy
Addiator
