ASBESTOS BOARD,
For Flange Joints, Cylinder Heads, Man-hole Plates, etc.
The only genuine, strictly fire-proof, made from pure ITALIAN ASBESTOS.
All sizes, from 1-32 to 1-4 inch.
Scientific American, Vol. XXXVII.—No. 2. [New Series.], July 14, 1877 A Weekly Journal of Practical Information, Art, Science, Mechanics, Chemistry, and Manufactures · 第 205 / 213 题