COVE

This small apparatus of wooden boards surrounding a centralized hole to contain torsion fibers for the torsion catapult were important in not only the development of the catapult, but also mathematical theory as the "cube-root problem" to determine the relationship between the diameter of the bundles of torsion fibers and dimensions of the catapult's main structural materials was proposed and later solved due to this scaling conundrum.  This mathematical feat is commonly overlooked by today's statistical approximations and regression lines which fit to statistical and mathematical inaccuracies to provide accurate, non-trivial estimations to statistical and physical, such as scale factors as proposed by the torsion catapult mathematicians, phenomena.

Source: 

Yurtoğlu, N. (2018). Http://www.historystudies.net/dergi//birinci-dunya-savasinda-bir-asayis-sorunu-.... History Studies International Journal of History, 10(7), 241-264. doi:10.9737/hist.2018.658