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SPIRAL SLIDE RULE.

EQUIVALENT TO

A STRAIGHT SLIDE RULE 83 FEET 4 INCHES LONG, OR, A CIRCULAR RULE 13 FEET 3 INCHES

IN DIAMETER.

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GEORGE FULLER, M. INST. C.E., PROFESSOR OF ENGINEERING IN THE QUEEN'S UNIVERSITY, IRELAND.

1

LONDON:
E. & F. N. SPON, 46, CHARING CROSS.
NEW YORK : 446, BROOME STREET.

1878.

Price Sicpence,

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SPIRAL SLIDE RULE.

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