METHOD FOR GAUGING THE LINEAR CROSS-SECTIONAL DIMENSIONS OF MOVING ROLLED PRODUCTS AND AN APPARATUS FOR ITS REALIZATION

摘要

The surfaces of a rolled product the distance between which is being gauged are illuminated with light pulses sent out in the form of a fine line. The light lines reflected from the surfaces are projected onto the screen of a single electron-optical storage element in such a manner that the distance between the line images is proportional to the distance being gauged. The distance between the images of the fine lines on the screen is measured during the time interval between consecutive light-impulse transmissions.