Full text: Vitruvius: Gvlielmi Philandri Castilionii ... In decem libros M. Vitruuii Pollionis de architectura annotationes

IN LIB. VII. 
223 
ia n desay 
,  ooo- 
Osquos T1 W.Kro daupiyovos d ogbovg u 
Q  DIOUTOU T TINV, Vtuntur etiam libra 
qua amp; libella dicitur, ad directiones exigenda, & longi¬ 
tudines, vt ex Vitruuno didicimus & Plimo lib. 3 6. cap. 
2 2. G. 25. Conftat autem gnomone, idest regulis dua¬ 
bus ita unetis capitibus duobus, & duaricatis alteris, vt 
rectum angulum efficiant, ab angulo pendente e flo pli, 
bo, quod vbi tranquerse compuctae tertie regulae deseri¬ 
ptam in medio ad per pendiculum lineam tetigerit, indica¬ 
bit libratam longitudinem. Instrumentum noftri Niuel¬ 
lum, Itali partim liuellam, partim arcipendalum nomi¬ 
narunt si¬ 
cut quod 
ad perpen. 
diculum es 
dicimus 
id esse a. 
iunt fa 
ctum ad 
plubum. 
ANGVLI AD NORMAM. Normam fa¬ 
briappellant sqaadra. Regulae capiti congmentant ali um 
prominentem, vt reser at due angulum rectum. Vitrunius 
lib. 9. cap. 1. Veram normam ta derformat vt sit trian- 
gulus disparibus lateribus, vno tamen recto angulo. Su¬ 
mantur (inquit) regalae tres, e quibus vna sit pedes tres. 
altera pedes quatuor, tertia pedes quing. Hag regule 
inter se compositae tangant alia aliam sais cacuminibus
	        
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