Abstract
This review is divided into four sections. The first deals with methods of continuously gauging strip as it runs from the rolling mill; among these, radiation methods are coming strongly to the fore at the present time, and a major portion of this section is devoted to them. The next section discusses the causes of gauge variation in rolling and is intended to serve as a link between Section I and Section III, which deals with the control of gauge; the main emphasis is on automatic control, which is just beginning to come into regular practice. Section IV deals with the measurement and control of reduction, which is closely related to gauge, and briefly touches on the subject of gauge control in tandem mills.
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