Image from page 12 of “Usus et Fabrica Circini Cuiusdam Proportionis” (1655)

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Image from page 12 of “Usus et Fabrica Circini Cuiusdam Proportionis” (1655)
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Identifier: ususetfabricacir00capr
Title: Usus et Fabrica Circini Cuiusdam Proportionis
Year: 1655 (1650s)
Authors: Capra, Balthasar
Subjects:
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Contributing Library: The Computer Museum Archive
Digitizing Sponsor: Gordon Bell

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Text Appearing Before Image:
^g&m FABRIGA CIRCINf PROPORTIONIS. Lineam LinearuminCircino Droportionis Ui, i. cnoefe. C A P V T I,

Text Appearing After Image:
T^Jirumentum quod componendum fufcepimus urcini1 formampoffidet>proHt in appofitafigura A*netatacer>nitur » /£</ cruraretii complanata 9 & leuigatadtio-rum digitorum latitudinem habent-tn Vtroqfcrure exVtraq;parte a centroper totam circini longitudinemducuntur quatuor lineain extrema infirmnenti par*te aqutdtfiantes – vt apparet in exemplo b. c. d. e. ; $* l. m. n. o. ^«r^eCa/?«£ v.ita Vttotumtnfirumentumfexdectm lineis conflituatur. Sedvt primum de anteriori parte fermonem faciamus.fufcipimus magis in*ternam lineam explicandam%qu*per Itteram p. ftgnata ctrnitur, kfquiaproportione aritbmettca tn ico, *oo. Velzjo. aquas partes %vclplures etiam pro Itbitu diuidi folet,ab aliquibus linea aritbmetica nun *cupatur 9quam denominationem non improbo , tamen ma?is mthi arri^det nomen defumptum ab operatiombus , videbtmus enim cmnes itneasiflitts tnflrumenti operathnts babere /bo ncmni congruentes . proutquando circini vfurn expltcabimusmanife$um evit; ftc cum huius tineavfusp

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