MATHEMATICAL INSTRUMENTS. Rare Boox
Barr. Partridge, Seth, 1603-1686. XE The description and use of an instrument, - 685 called the double scale of proportion. By which
«P25D instrument, all questions in arithmetick, geometry, trigonometry, astronomy, geography, navigation, fortification, gunnery, gaging vessels, dialling, may be most accurately and speedily performed, without the assistance of either pen or compasses. By Seth Partridge.
London, Printed for Hannah Sawbridge at the
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