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enginners/students slide rule-possibly 1940s or 50s?

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Slide Rules11 of 141960 - Dietzgen Slide Rule Instruction ManualK & E Slide Rule
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    Posted 11 years ago

    michaeln544
    (351 items)

    bought down birminghams old bull ring markets in 1980s for 50 pence, no idea how you use it. electronic calculators replaced it in the 1970s i believe.

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