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Scientific American, Vol. 43, No. 18 (October 1880) (1880)
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carrying a sheet of paper upon which will be spread out and leveled as the car is drawn forward construction. the movements of the needle are to be recorded. This cy- rafter the discharging of the train. As soon as the leveling Purther information maybe obtained by addressing the linder is of… … ANDREWS' LEVELING ATTACHMENT FOR EARTH CARS. © 1880 SCIENTIFIC AMERICAN, INCIron · Patents · Rosin · Illustrated · Patented · Scientific American · Treatise · Induction coil · Inclined plane · Practical treatise · Solid stream · Steam engine · Public lands · Type writing · Sulphurous dioxide · Gutta percha
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