D. Galilaei de Galilaeis ... De proportionum instrumento a se invento, quod meritò compendium dixeris universae geometriae, tractatus, rogatu philomathematicorum a Mathia Berneggero ex italica in latinam linguam nunc primùm translatus : adjectis etiam notis illustratus, quibus & artificiosa instrumenti fabrica, & usus ulterior exponitur (1613)
Galilei, Galileo, 1564-1642 · Argentorati : Typis Caroli Kiefferi; prostant apud Joannem Carolum ... · leaf 71
ereaInfttumentilatus CD. coincidat cum recta CA. & ex angulo . C. fpe&tetur alter locus B. noteturqueabícitfa umbra DE. verbigratià 15. pínctorum: qui numerus in fe ductus, exhibet quadratum 225. cui addantur (0600 fiimma10225. cujus quadrata radix eft ior. Multiplica porrò minorem diftantiam 30.… … / si | * G 3 fübtrahendum Pu.
Compasses (Mathematical instruments) · Geometry -- Early works to 1800 · Measuring instruments
Internet Archive · Fisher - University of Toronto · Public domain (published before 1931). Free to use for anything.
![An illustration from Il primo[-secondo] libro d'architettura (1551)](https://img.insideoutlibrary.com/img/200/ia-ilprimosecondoli00serl-12-1.webp)
![An illustration from Albertvs Dvrervs Nvrembergensis pictor hvivs aetatis celeberrimus, versus è Germanica lingua in Latinam : pictoribus, fabris aerariis ac lignariis, lapicidis, statuariis, & vniuersis demum qui circino, gnomone, libella, aut alioqui certa mensura opera sua examinant, propè necessarius, adeò exactè : quatuor his suaru[m] Institutionum geometricarum libris, lineas, superficies & solida corpora tractauit, adhibitis designationibus ad eam rem accommodatissimis : denuo ad scripti exemplaris fidem omnia diligenter recognita, emendatius iam in lucem exeunt (1535)](https://img.insideoutlibrary.com/img/200/ia-albertvsdvrervsn00dure-184-1.webp)
