Chorobates

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-	|nome= Nome documentato da Vitruvio (in latino "chorobate").	+	|nome=
		+	Name documented by Vitruvius (in Latin "chorobate").
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-	|descrizione= Strumento di antica origine per il livellamento dei canali e delle condotte idriche. Vitruvio, che lo chiama "chorobate", lo descrive come più preciseo della [[livella ad acqua]]. Lo strumento era fromato da un regolo lungo circa venti piedi (circa 6 m) con due sostegni alle estremità. Sotto il regolo, ben fissate ai sostegni, vi erano due traverse con linee tracciate per indicare la perpendicolarità. Due o quattro fili a piombo appesi al regolo indicavano sulle linee delle traverse la posizione orizzontale.	+	|descrizione=
		+	Instrument of ancient origin for levelling canals and water conduits. Vitruvius, who called it "chorobate", describes it as being more precise that a [[Bubble Level | bubble level]]. The instrument consisted of a rule twenty feet (approx. 6 m) long with supports at both ends. Beneath the rule, firmly fixed to the supports, were two crosspieces marked with lines to indicate perpendicularity. Either two or four plumb bobs hanging from the rule indicated the horizontal position on the lines marked on the crosspieces.
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Revision as of 12:47, 13 November 2009

Name documented by Vitruvius (in Latin "chorobate").

Description

Instrument of ancient origin for levelling canals and water conduits. Vitruvius, who called it "chorobate", describes it as being more precise that a bubble level. The instrument consisted of a rule twenty feet (approx. 6 m) long with supports at both ends. Beneath the rule, firmly fixed to the supports, were two crosspieces marked with lines to indicate perpendicularity. Either two or four plumb bobs hanging from the rule indicated the horizontal position on the lines marked on the crosspieces.

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Bibliographical Resources

Vitruvio (Vitruvius Pollio, Marcus). De Architectura, a cura di Pierre Gros, Einaudi, Torino, 1997, 2 voll., Lib. VIII, cap. V (vol. II, p. 1137).

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Images

Mario Bettini. Aerarium philosophiae mathematicae : in quo elementa philosophiae geometricae de planis, curuis, & solidis figuris applicata et ornata, vsibus eximijs in omni scientiarum & artium genere, nouis praxibus, paradoxis, locis Aristotelicis & aliorum philosophorum & scriptorum, corollarijs, scholijs, eruditionibus, moralitatibus, demonstrationibus nouis, facillimis & vniuersalissimis confirmata. Bologna, 1648, p.523

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Author of the entry: Filippo Camerota