Zubler, Leonhard
,
Fabrica et vsvs instrvmenti chorographici : qvo mira facilitate describuntur regiones & singulae partes earum, veluti Montes, Vrbes, Castella, Pagi, Propugnacula, & simila
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FABRICA ET VSVS
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ce Aſſerem itidem ex ligno duro, ſolido ac firmo, pollicem
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circiter craſſum: </
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<
s
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">hunc bene dolatum accuratè quadra ſin-
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gulis lateribus ſeſquipedem circiter continentibus, & </
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<
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gnitis litteris A. </
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<
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">B. </
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<
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">C. </
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<
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">D. </
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<
s
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xml:space
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">In medio Aſſeris facto puncto, Cir-
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cini crus unum pone in puncto jam facto, alterum verò
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extende, ferè ad Aſſeris extremitatem, ac peripheriam cir-
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cumducito: </
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>
<
s
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="
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"
xml:space
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">hanc peripheriam ad dimidii pollicis craſſi-
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tiem excavato, & </
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<
s
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xml:space
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">orbem ei inſerito, qui in cavatura illa fa-
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ci@è circummoveri poſſit, ſintq́ue orbis & </
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>
<
s
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xml:space
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preserve
">Aſſer ſupernè in
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eodem plano.</
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<
s
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</
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<
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<
s
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">Fac porrò ad Orbis extremitatem locum excipiendæ
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magnetis lingulæ accommodum, itidem Orbi & </
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<
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">Aſſeri æ-
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quiplanum. </
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<
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">Quadraturam tunc in Orbe fabricator, tam
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magnam, quàm dari poteſt: </
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<
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xml:space
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">hanc itidem excavato, ad gra-
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ni hordeacei craſſitiem circiter. </
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<
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">Canaliculos item cavos
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(Strias Vitruvius vocat) ad Aſſeris latera facito inter A B. </
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">& </
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C. </
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<
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">D. </
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<
s
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xml:space
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">nec non Regulam ex orichalco, dimidium circiter
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pollicem latam, vel ampliùs; </
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<
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xml:space
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">quæ ita fabrefieri debet, ut æ-
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qualiter Aſſeri incumbat, inq́ue binis canaliculis excava-
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tis liberè circumvolvi queat.</
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<
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">His confectis binas inter B. </
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<
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">C. </
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<
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">dioptras erigito cum binis
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foraminibus minutis: </
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<
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">cujuſmodi dioptræ in Quadranti-
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bus ſive Aſtrolabiis vulgò viſuntur. </
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<
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">Vel, quod magis pla-
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cet, dioptrarum iſtarum loco duos apices vel acus facito,
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quæ in lineâ rectâ ſtent erectæ: </
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<
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">cujus generis dioptris in a-
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liis etiam inſtrumentis uſus ſum, ut quæ commodiſſimæ & </
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certiſſimæ ſunt: </
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<
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">quum è contra aciei oculi tranſmiſſio per
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minuta illa foramina vehemēter fallere poſſit, in locis præ-
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ſertim ſubcreperis & </
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<
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">tenebricoſis.</
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<
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">Regulam porrò ex orichalco, & </
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<
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">eâ, qua dictum, magni-
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tudine factam, in certas dividito partes, ſic, ut primùm per
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ejus medium ducas lineam rectam, unumq́ue latus divi.
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</
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<
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">das in partes 200. </
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<
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">alteram verò in partes 1000. </
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<
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">eritq́ue in-
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tegra hæc Inſtrumenti fabrica; </
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