01895nam 2200409 n 450 99639474230331620200824120543.0(CKB)3810000000009716(EEBO)2240873423(UnM)99829753e(UnM)99829753(EXLCZ)99381000000000971619950622d1673 uy |engurbn||||a|bb|The line of proportion or numbers, commonly called Gunters 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 only upon the ruler. By William LeybournLondon printed by J.S. for G. Sawbridg, at the Bible on Ludgate-Hill1673[6], 16, [2], 153, [3] p., [1] leaf of plate ill. (table)Text and register continuous despite pagination.With final advert. leaf.Reproduction of the original at the British Library.eebo-0018Slide-ruleEarly works to 1800Mathematical instrumentsEarly works to 1800MensurationEarly works to 1800Slide-ruleMathematical instrumentsMensurationLeybourn William1626-1716.1001442Cu-RivESCu-RivESCStRLINWaOLNBOOK996394742303316The line of proportion or numbers, commonly called Gunter's line made easie2348521UNISA