A 14-channel displacement measuring device utilizing magnetic and paper tape recording
Gordon R. Partridge, John W. Dunkin, R. L. Anderson, R. C. Geldmacher · Transactions of the American Institute of Electrical Engineers Part I Communication and Electronics · 1957
ONE of the most pressing problems in modern life is the construction and maintenance of an adequate system of highways. It is evident that the need is great for more new highways and, equally important, they must be constructed in the most durable manner possible.