An addition unto the use of the circles of proportion., by William Oughtred et al.

Title:	An addition unto the use of the circles of proportion.
Alternate title:	The circles of proportion and the horizontal instrument. The former shewing the maner how to work proportions both simple and compound: and the ready and easy resolving of quæstions both in arithmetic, geometrie, & astronomie: and is newly increased with an additament for navigation. All which rules may also be wrought with the penne by arithmetic, and the canon of triangles. The later teaching how to work most quæstions, which may be performed by the globe: and to delineat dialls upon any kind of plaine. Invented, and written in latine by W.O. Translated into English, and set out for the public benefit, by William Forster.
Author:	Oughtred, William, 1575-1660
Author:	Forster, William
Author:	oughtred, William, 1575-1660
Note:	London : Printed by Augustine Mathewes, and are to bee sold by Nic: Bourne at the Royall Exchange, 1633

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Subject:	Mathematical instruments -- Early works to 1800
Subject:	Navigation -- Early works to 1800
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