Decitrig Ever-There Log Duplex Slide Rule and Manual Vintage 1948, Mathematics

$70

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The Vintage 1948 Log Log Duplex Decitrig Slide rule from Keuffel & Esser with leather case and outer cardboard tube. It is vintage and suitably aged. Please see the photos for damage the cardboard tube needs attention - of course, none of this detracts from the functioning of the slide rule. Technical drawing, surveying, engineering, mathematics, measurement, logarithm, trigonometry, Made in the USA, comes with the instruction guide

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