A Calculating Machinedetails

[Picture: A Calculating Machine]
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Image title:

A Calculating Machine

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Out of copyright (called public domain in the USA), hence royalty-free stock image for all purposes usage credit requested
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Notes:

Showing the numbers (in black marks) struck on the register, and the keys struck to multiply 2253 by 84. The answer is shown on the register.” (p. 775)

This is a hand-operated calculator.

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Dimensions:

130 x 73mm (5.1 x 2.9 inches)

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Filename:

0775-A-Calculating-Machine-q75-500x286.jpg

Scanner dpi:

2400 dots per inch

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