STEEL CASTINGS,
From 1/4 to 10,000 lbs. weight, true to pattern. An invaluable
substitute for forgings, or for malleable iron castings requiring
great strength.
Scientific American, Vol. XXXVII.—No. 2. [New Series.], July 14, 1877 A Weekly Journal of Practical Information, Art, Science, Mechanics, Chemistry, and Manufactures · 第 190 / 213 题