Footnote 25
Part I, §23.  The Almury; called also denticulus, ostensor, or `calculer'.  In fig. 2, it may be seen that the edge of the Rete is cut away near the head of Capricorn, leaving only a small pointed projecting tongue, which is the almury or denticle, or (as we should now say) pointer.  As the Rete revolves, it points to the different degrees of the border.  See also fig. 9, where the almury is plainly marked.