Ual (pronounced as woo-aal), also known as Ural, is a sand clock-shaped grinding tool used by the Bodo people.
[1] Since forests have abounded in Assam for centuries, wood is used to make an ual.
From a tree trunk, a circular core is carved out and sand-clock counter is achieved by trimming its outer belly.
The two ends of the ramming tool is clipped with circular metal rings for its longevity.
Other things such as a mixture of leaves or dry fish are also ground using an ual.