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- Q1076525 subject Q7215882.
- Q1076525 subject Q8790127.
- Q1076525 subject Q8826767.
- Q1076525 abstract "The Chorobates, described by Vitruvius in Book VII of the Architecture, was used to measure horizontal planes and was especially important in the construction of aqueducts.Similar to modern spirit levels, the Chorobates consisted of a beam of wood 6 m in length held by 2 supporting legs and equipped with 2 plumb lines at each end. The legs were joined to the beam by two diagonal rods with carved notches. If the notches corresponding to the plumb lines matched on both sides, it showed that the beam was level. On top of the beam, a groove or channel was carved. If the condition was too windy for the plumb bobs to work effectively, the surveyor could pour water into the groove and measure the plane by checking the water level.".
- Q1076525 wikiPageExternalLink ferris_state_university1.htm.
- Q1076525 wikiPageExternalLink roman_surveying1.htm.
- Q1076525 wikiPageWikiLink Q1227060.
- Q1076525 wikiPageWikiLink Q1232238.
- Q1076525 wikiPageWikiLink Q16784791.
- Q1076525 wikiPageWikiLink Q207988.
- Q1076525 wikiPageWikiLink Q2088593.
- Q1076525 wikiPageWikiLink Q47163.
- Q1076525 wikiPageWikiLink Q643950.
- Q1076525 wikiPageWikiLink Q7215882.
- Q1076525 wikiPageWikiLink Q8790127.
- Q1076525 wikiPageWikiLink Q8826767.
- Q1076525 comment "The Chorobates, described by Vitruvius in Book VII of the Architecture, was used to measure horizontal planes and was especially important in the construction of aqueducts.Similar to modern spirit levels, the Chorobates consisted of a beam of wood 6 m in length held by 2 supporting legs and equipped with 2 plumb lines at each end. The legs were joined to the beam by two diagonal rods with carved notches.".
- Q1076525 label "Chorobates".