Gripalculator slide rule patent no.335379 of 1929

Made:: Cardiff

manufacturer:: Lewis & Tylor Limited

Gripalculator slide rule patent no.335379 of 1929

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Gripalculator slide rule patent no.335379 of 1929
Science Museum Group
© The Board of Trustees of the Science Museum

Gripalculator slide rule patent no.335379 of 1929

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Category:: Mathematics

Object Number:: 1952-35

type:: ready reckoner

credit:: Lewis and Taylor Limited

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Gripalculator slide rule patent no.335379 of 1929

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