01598nam 2200349Ia 450 99638490770331620200824132554.0(CKB)4940000000075060(EEBO)2240924758(OCoLC)ocm12109719e(OCoLC)12109719(EXLCZ)99494000000007506019850603d1678 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 board, 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 onely upon the ruler /by William LeybournLondon Printed by J.M. for G. Sawbridge ...1678[6], 16, [2], 153 pReproduction of original in the British Library.eebo-0018Mathematical instrumentsEarly works to 1800Slide-ruleMathematical instrumentsSlide-rule.Leybourn William1626-1716.1001442EAEEAEWaOLNBOOK996384907703316The line of proportion or numbers, commonly called Gunter's line made easie2348521UNISA