Full text: Vitruvius: Vitrvvivs Itervm Et Frontinvs À Iocvndo Revisi Repvrgatiqve Qvantvm Ex Collatione Licvit

117. De catapultarum & ſcorpionũ rõnibus. # Cap. XV.

NVnc uero queæ ad præſidia periculi & ne-
ceſſitatem ſalutis ſunt inuenta. i. ſcorpio
num, catapultarũ, & baliſtarũ rõnes, qui
bus ſymmetriis cōparari poſſint exponā. Et primũ
de catapultis & ſcorpiōibus. Omni igitur ꝓportione
eorũ rōcinata, ex ꝓpoſita ſagitte longitudine, quā id
organũ mittere debet, eius q́ nonæ ꝑtis fit for aminũ
in capitulis ma gnitudo, per quæ tendũtur nerui torti,
qui brachia cõtinere catapulatarũ debẽt. Eorũ autem
for aminum capituli ſic deformatur altitudo & latitu-
do, Tabulæ quæ ſunt in ſummo & in imo capituli,
paralleli\’q́ uocātur, ſiāt craſſitudine unius forami-
nis, latitudine unius & eius dodrantis, in extremis,
for aminis unius & . S. Paraſtatæ dextra ac ſiniſtra
præter cardines altæ for aminum quatuor, craſſæfo-
raminum ꝗnum, cardines for aminis. s̄ \=2920. A forami-
ne ad medianã paraſtatã itẽ foraminis. s̄ \=2920. Latitu-
do paraſtados mediæ unius foraminis & eius. \=1 K. craſſitudo foraminis unius. Interuallum ubi ſagitta
collocatur in media paraſtade for aminis ꝗtis quartæ,
Anguli quatuor ꝗ ſunt circa in lateribus & frõtibus
laminis ferreis, autſtylis æreis & clauis cõfigantur. Canaliculi (ꝗ græce στρίξ dicitur) lõgitudo fordaminũ
xix. Regularũ quas nōnulli bucculas appellant. quæ
dextra ac ſiniſtra canalẽ figuntur for aminũ. xix. al-
titudo, for aminis unius & craſſitudo, & affigũtur re
gulæ duæ in quas inditur ſuccula habens lōgitudinẽ
for aminũ triũ, latitudinẽ dimidiũ for aminis, craſſit@

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