01935nam 2200397Ia 450 99639386780331620210104164211.0(CKB)3810000000006148(EEBO)2240869491(OCoLC)ocm61297065e(OCoLC)61297065(EXLCZ)99381000000000614820050819d1698 uy 0engurbn||||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 LeybournThe sixth edition carefully corected and other news ways of measuring / added by the author.London Printed for A. and J. Churchill1698[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-ruleEarly works to 1800Mathematical instrumentsEarly works to 1800MensurationEarly works to 1800Slide-ruleMathematical instrumentsMensurationLeybourn William1626-1716.1001442UMIUMIBOOK996393867803316The line of proportion or numbers, commonly called Gunter's line made easie2348521UNISA