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Antique measuring instruments/4743-Spiral slide rule
Antique measuring instruments/4743-Spiral slide rule
Antique measuring instruments/4743-Spiral slide rule
Antique measuring instruments/4743-Spiral slide rule
Antique measuring instruments/4743-Spiral slide rule
Antique measuring instruments/4743-Spiral slide rule
Antique measuring instruments/4743-Spiral slide rule
Antique measuring instruments/4743-Spiral slide rule
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Antique measuring instruments/4743-Spiral slide rule
Antique measuring instruments/4743-Spiral slide rule
Antique measuring instruments/4743-Spiral slide rule
Antique measuring instruments/4743-Spiral slide rule
Antique measuring instruments/4743-Spiral slide rule
Antique measuring instruments/4743-Spiral slide rule
Antique measuring instruments/4743-Spiral slide rule
Antique measuring instruments/4743-Spiral slide rule
Antique measuring instruments/4743-Spiral slide rule
Antique measuring instruments/4743-Spiral slide rule
Antique measuring instruments/4743-Spiral slide rule
Antique measuring instruments/4743-Spiral slide rule
Antique measuring instruments/4743-Spiral slide rule
Antique measuring instruments/4743-Spiral slide rule
Antique measuring instruments/4743-Spiral slide rule
Antique measuring instruments/4743-Spiral slide rule
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1444917615Code 4743 Spiral slide ruleAntique spiral slide-rule (ebonite, brass and papier maché) conceived by George Fuller, engineering professor at the Queen’s University in London in 1878; it has its original mahogany box. Width of box cm 46 – inches 18.11, height cm 10.5.

The efficacy of slide rule as instrument for multiply or divide quickly and also for square roots etc. was appreciated just at the end of XVIII century. There were many kinds for different activities, for example for measure wood, iron bars, barrels, live-stock, wine and alcohol taxes. They were made slide rules for chemical equivalence, for calculate rents, barometric heights, time for photographic exposure.

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Code 4743 Spiral slide rule

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