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Allbrit Polar Planimeter by Stanley
This Planimeter is a Polar type integrating machine that was made...
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Allbrit Pole Wagon Polar Planimeter by Stanley
This Planimeter is a Polar type integrating machine that was made...
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New Allbrit Planimeter by Stanley With Instruction Manual
This almost new Planimeter is a Polar type integrating machine...
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Mannheim Slide Rule Made in 1920 by Albert Nestler No.9...
This is a rare Albert Nestler early Mannheim slide rule no.9 with...
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Almost New UNIQUE Log-Log Slide Rule With Instructions.
This 10 inch slide rule is almost new in its original box including...
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Japanese Abacus with 5 Beads in 15 Rows
A Japanese Abacus, with 5 beads in 15 rows. Abacus comes from the...
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Fowler's Magnum Long Scale Calculator
Fowler & Co. in Manchester made this calculator during the 1930’s....
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Unique Adix Adding Machine, c.1905, Made in Germany
Adix is a relatively simple column adder for adding numbers up...
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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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Development: Epoch | Design: Luch
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