01895nam 2200433Ia 450 99639663910331620200818211517.0(CKB)4940000000057360(EEBO)2240949183(OCoLC)ocm12392520e(OCoLC)12392520(EXLCZ)99494000000005736019850816d1684 uy |engurbn||||a|bb|The line of proportion or numbers, commonly called Gunter's line made easie[electronic resource] by the which may be measured all manner of superficies and solids as boards, glass, pavement, timber, stone, &c. : also, how to perform the same by a line of equal parts, drawn from the centre of a two-foot rule : whereunto is added, The use of the line of proportion improved : whereby all manner of superficies and solids may both exactly and speedily be measured, without the help of pen or compasses, by inspection, looking only upon the ruler /by William LeybournLondon Printed for Hannah Savvbridge ...1684[6], 153, [2] p., 1 leaf of folded platesAdvertisement: prelim. p. [6] and p. [1]-[2] at end.The first ed. was pub. in 1667, by G. Sawbridge.Reproduction of original in Huntington Library.eebo-0113Slide-ruleAstronomyEarly works to 1800MathematicsEarly works to 1800NavigationEarly works to 1800Slide-rule.AstronomyMathematicsNavigationLeybourn William1626-1716.1001442EAAEAAm/cWaOLNBOOK996396639103316The line of proportion or numbers, commonly called Gunter's line made easie2348521UNISA