A planimeter, also known as a platometer, is a measuring instrument used to determine the area of an arbitrary two-dimensional shape.

What is Plano meter?

planometer. / (plæˈnɒmɪtə) / noun. a flat metal plate used for directly testing the flatness of metal surfaces in accurate metalwork.

What does Intil mean?

Definition of "intil" [intil]

Into; in. Unto.