Heron <Alexandrinus> - Heronis Alexandrini spiritalium liber

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10296HERONIS

LXXV.

Hydraulici inſtrumenti conſtructio.

84[Figure 84]

Sit quædam arula ænea A B C D, in qua ſit aqua, & in aqua conca-
vum hemiſphærium inverſum, quod furnus appellatur E F G H, ha-
bens in humido defluxum, ad partes, quæ in fundo ſunt. A vertice autem
ipſius duo producantur tubi ſimul cum eo perforati, qui ſunt circa aru-
lam, quorum unus G K L M in exteriorem arulæ partem incurvetur,
ſimul perforatas cum modiolo N X O P habente os infra, & interiorem
ſuperficiem rectam ad embolum. Huic autem embolus R S apteturita,
ut aeringredi non poſſit. Atque embolo jungatur regula TY valde fir-
ma, ad quam aptetur alia regula Y Φ, mota circa clavum in Y, & cir-
cumacta ad rectam regulam ΨQ firmiter ſtabilitam. At modiolo NXOP
imponatur ad fundum alter modiolus parvus Ω ſimul cum ipſo perforatus,
& coopertus ex parte ſuperiori, habensque foramen, per quod aër in
modiolum ingrediatur. Sub foramine autem ſit laminula ipſum

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Scan	Original
101	95
102	96
103	97
104	98
105	99
106
107
108	102
109	103
110	104
111	105
112	106
113	107
114	108
115	109
116	110
117	111
118	112
119	113
120	114
121	115
122	116
123	117
124	118
125	119
126	120
127
128
129
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