1) Measuring instrument
Found on
https://www.crosswordclues.com/clue/chorobates
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 we.....
Found on
http://en.wikipedia.org/wiki/Chorobates
No exact match found.
