Alro 1010 - Calculator - 1950-1960 - Dutch Circular Calculating Wheel – 1950s

ALRO 1010 Commercial – Rare Dutch Circular Slide Rule – ca. 1950 Original ALRO 1010 Commercial circular slide rule, manufactured in The Hague, Netherlands. Equipped with a very extensive long-scale division and conversion tables for among other things sizes, weights, capacity and power. Complete with the original metal protective box/stand and leather case. Nice vintage condition with normal signs of use and aging. The patent numbers are clearly visible on the central disk. A special and decorative collectible for enthusiasts of historical calculating instruments, technology and Dutch industrial history. See photos for your own impression Period: ca. 1950–1960 Material: metal, paper and leather Brand: ALRO, The Hague Type: 1010 Commercial Carefully packed and insured shipment

估價:$134.55

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