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Produx Pocket calculator for simple calculations
‘Produx’ Pocket calculator made in West Germany. This is the...
SOLD
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1950 Reitz Slide Rule by Albert Nestler No. 20/1, Germany
An Albert Nestler Rietz slide rule no. 20/1 with mahogany body,...
SOLD
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The Adder Calculator by CH Webb NY
This is the earlier version of the Webb adder. It was patented...
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Polar Planimeter with adjustable arms by R. Reiss, Germany.
This special type Planimeter was made in Germany by Robert Reiss...
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Fowler's Circular Slide Rule Calculator Type ‘Long Scale’
Fowler & Co. in Manchester made this pocket calculator. It was...
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Curta Type II Mechanical Calculator 1958
Curta Type II Mechanical Calculator. This Type II model with serial...
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Otis King Cylindrical Slide Rule Calculator Model 'K'.
Otis King Slide Rule Calculator Model 'K'. This is a cylindrical...
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Mechanical Pinwheel Calculator ‘Original Odhner’
Willgodt T. Odhner invented the pinwheel calculating machines in...
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Curta Type I Mechanical Calculator in Mint Condition.
This mint condition Type I model with serial number 47218 was manufactured...
SOLD
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