1. The History Of The Coloseum:Construction And Social Significance
... of the chorobates had a leg positioned perpendicular to the plank. Plumb bobs at either end shown that the device was level when lined up with vertical lines drawn on the diagonal cross planks. The water in the channel was also used to check for levelness. Only when the entire area of the stadium was level, could the workers could begin to ... top of a post; plumb bobs hung off each arm of the cross. A surveyor would look across the instrument, from one plumb bob to the one diagonal from it. If each pair was level with it's diagonal, the post was exactly perpendicular to the ground.The ...
- Word Count: 2911
- Approx Pages: 12
- Has Bibliography
- Grade Level: High School