Olsen Testing Machines and Instruments. Bulletin No. 6. Olsen-Andrew Road Surface Rater, Also Olsen Concrete Beam Testing Machine and Olsen Machines for Testing Cement, Concrete, Brick, Tile, Reinforcing Bars and All Road Material.
[1930] · Philadelphia
by Tinius Olsen Testing Machine Co.
Philadelphia: Tinius Olsen Testing Machine Co., [1930]. Octavo, stapled illus. wrappers, 12 pp. Very Good, with light wear to coverrs. (Inventory #: 90059sc)