Computer Museum at the University of Waterloo : : Adding Machine [computing_technology_devices_analog_processor_calculating_machine_add]

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The Lightning Calculator

Lightning Adding Machine

Produx Adding Machine

Lightning Adding Machine

Gem Adding Machine

Gem Adding Machine Case

Directions for the Operation of the Gem Adding Machine

Guarantee for the Gem Adding Machine

Decimal Equivalents for the Gem Adding Machine

Golden Gem Adding Machine Model 15

Golden Gem Adding Machine Model 15 Case

Directions for the Operation of the Golder Gem Adding Machine

Guarantee for the Golden Gem Model 15

Important! Slip for the Golden Gem Model 15

Golden Gem Order Form

Baby Calculator

Baby Calculator Case

Baby Calculator Flyer

Baby Calculator Instructions

Baby Calculator Directions

The Lightning Adding Machine

The Lightning Adding Machine

Addometer Model A

Addometer Model A

Directions For Use of the Addometer

The Lightning Adding Machine

The Lightning Adding Machine

Monroe Model LA

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