UN METODO Y APARATO PARA DETERMINAR LAS ELEVACIONES O ALTU- RAS RELATIVAS DE LOS COMPONENTES DE UNA INSTALACION PARA LA FABRICACION DE VIDRIO POR FLOTACION.

摘要

This invention pertains to determination of relative elevations of various components of a float glass producing facility. The extremely flat top surface of the bath of molten tin upon which the glass ribbon is formed is utilized as a reference plane. The elevation of this surface is precisely determined, with the elevation serving as a common bench mark for measuring the relative elevations of various components along both sides of the float glass facility.