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The Correntator Calculating Machine.
A Simple Flat Stylus Adding Machine. This stylus slide adder was...
Price: $100.00
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A Rare Circular Slide Rule Calculator by Palmer and Fuller....
This is a double-sided circular slide rule calculator consisting...
Price: $950.00
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Otis King Cylindrical Slide Rule Calculator Model 'K'
Otis King Slide Rule Calculator Model 'K'. This is a cylindrical...
Price: $280.00
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Consett Iron Co Ltd Circular Weight Calculator by Fearns...
Consett Iron Co Ltd Weight Calculator for Steelwork. Double sided...
Price: $25.00
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Fowler Twelve-Ten Circular Calculator
Fowler & Co. in Manchester made this pocket calculator. It was...
Price: $250.00
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Otis King Cylindrical Logaritmic Slide Rule Model 'L'.
This is a logarithmic cylindrical pocket slide rule with helical...
SOLD
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Allbrit Polar Planimeter by Stanley
This Planimeter is a Polar type integrating machine that was made...
SOLD
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Allbrit Pole Wagon Polar Planimeter by Stanley
This Planimeter is a Polar type integrating machine that was made...
SOLD
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New Allbrit Planimeter by Stanley With Instruction Manual
This almost new Planimeter is a Polar type integrating machine...
SOLD
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