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Category:
Mechanical
Stephenson’s little adder
Agents wanted!
Alpina or Curta?
Battle of the handheld calculators
Blue Velvet
The lovely Adix calculator
“Iron Felix” meets the Odhner calculator
Two pinwheel calculators compared
The ingenious Ifach adder
A carry mechanism with no gears!
Troncet’s OTHER calculator
The Totalisateur dial adder
Bloch’s Gewicht-schnellrechner
A mechanical nomogram for weight calculations
Webb’s Adder
One curiously shaped calculator!
The Ken+Add, inside and out
Small adder, big quality
Locke’s “pocket” adder
Well, at least it's pretty!
Black Gem
The Golden Gem adding Machine
Odhner Pinwheel Calculator
Carrying fine childhood memories...
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