File:Addiator Duplex-Addition side.jpg - Wikimedia Commons
Addiator Duplex Tutorial - Addiator Duplexチュートリアル - YouTube
Angle/Time Calculators
Addiator
ADDIATOR DUPLEX antique calculator in case instructions Germany | eBay
Piccolo-S addiator calculator - MAAS Collection
Duplex-size - Addiator - MechaniCalculator
Addiator Duplex Addition Subtraction Manual Pocket Vintage Calculator F30 | eBay
John Wolff's Web Museum - Slide Adding Machines
Addiator Duplex Addition Subtraction Manual Calculator, Stylus & Instructions | #1988683190
Addiator Duplex Addition Subtraction Manual Pocket Vintage Calculator F30 | eBay
Addiator - Etsy
Addiator Duplex Addition Subtraction Manual Pocket Vintage Calculator F30 | eBay
TCoCD: Addiator Duplex
John Wolff's Web Museum - Slide Adding Machines
ADDIATOR DUPLEX German Calculator in Case Pen - Etsy
Addiator Duplex | National Museum of American History
SUBTRACTION DUPLEX Addiator Adding Machine. | eBay
SUBTRACTION DUPLEX Addiator Adding Machine. | eBay
ADDIATOR DUPLEX German Calculator in Case Pen - Etsy
Duplex-size - Addiator - MechaniCalculator
Addiator Duplex Antique Calculator Addition Subtraction Leather Case Stylus | eBay
