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Used by the late Gen Roy &c. in the great English Trigonometrical Operations.

London. Printed for & Published by Wand S. Jones. jo born as the As direxpril 1997.

AND

GRAPHICAL ESSAYS,

CONTAINING

A GENERAL DESCRIPTION

OF THE

MATHEMATICAL INSTRUMENTS

USED IN

GEOMETRY, CIVIL AND MILITARY SURVEYING, LEVELLING,
AND PERSPECTIVE;

WITH MANY NEW

PRACTICAL PROBLEMS,

ILLUSTRATED BY THIRTY-FOUR COPPER PLATES.

BY THE LATE

GEORGE ADAMS,

MATHEMATICAL INSTRUMENT MAKER TO HIS MAJESTY, &c.

THE FOURTH EDITION,

CORRECTED AND ENLARGED

BY WILLIAM JONES, F. Am. P. S.

LONDON:

Printed by C. Baldwin, New Bridge-street;

FOR, AND SOLD BY, W. AND S. JONES,
30, HOLBORN.

Price 16s, in Boards.

[blocks in formation]
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