Aristo 10 068 machine time steel weight SWB circular slide rule 1960 Germany
€75.00
Aristo 10 068 machine time steel weight SWB circular slide rule, made ca. 1960 in Germany
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1 in stock
Description
This duplex round slider rule was specially made for the company Stahlwerke Bochum (SWB) and is marked Aristo 10 068. It comes in a generic non signed leather sleeve. Made in Germany around 1960 for easy calculating of weight of steel sheets, blocks or rods when the size is known. Fully functioning and in good condition, with clear signs of use (scratches). Diameter of the disk is a large ca. 14 cm or 7 1/2 inches. Check the below video on how to work your vintage man tool : circular slide rule operation instructions!
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