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Lot 0140
European, Standing Optical Scale, collapsible with metric slider, with original case lined in blue velvet, circa 20th century, used potentially for: cartography, minerology, biology, apparently unmarked, box: 1.25 x 11.5 x 4.75 inches


in generally good condition, apart from: general wear and scratching from handling

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European Standing Modern Optical Sliding Scale

Estimate $20 - $50Aug 15, 2018