Lewis Short
(adj.adv.) : mensūrālis, e, adj.id.
* Of or belonging to measuring, measuring- (post-class.): mensuralis linea, Sicul. Fl. p. 19 Goes.— Plur. as subst.: mensūrālia, ium, n., the title of a work by Varro, Prisc. p. 817 P.— Hence, adv.: mensūrālĭter, by measure (post-class.), Hyg. de Limit. p. 167 Goes.
Charlton T. Lewis, Charles Short, A Latin Dictionary